Naturalistic Developmental Behavioral Interventions for AUTISM SPECTRUM DISORDER

Yvonne Bruinsma Mendy Minjarez Laura Schreibman Aubyn Stahmer

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FOR MORE, go to bit.ly/BruinsmaNBDI

Naturalistic Developmental  
Behavioral Interventions for

Autism Spectrum Disorder

edited by
Yvonne Bruinsma, Ph.D., BCBA-D

In STEPPS and In STEPPS Academy
Irvine, CA
Mendy B. Minjarez, Ph.D.
Seattle Children’s Hospital Autism Center

and University of Washington School of Medicine
Seattle, WA
Laura Schreibman, Ph.D.

Baltimore·London·Sydney

University of California, San Diego
La Jolla, CA

and
Aubyn C. Stahmer, Ph.D., BCBA-D

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Classification: LCC RJ506.A9 (ebook) | LCC RJ506.A9 N38 2019 (print) | DDC
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Library of Congress Cataloging-in-Publication Data
Names: Bruinsma, Yvonne, editor.
Title: Naturalistic developmental behavioral interventions for autism
 spectrum disorder / edited by Yvonne Bruinsma, Ph.D., BCBA-D, In STEPPS
  Academy, Irvine, CA, Mendy B. Minjarez, Ph.D., Seattle Children’s Hospital Autism Center and

spectrum disorder / edited by Yvonne Bruinsma, Ph.D., BCBA-D, In STEPPS
  Academy, Irvine, CA, Mendy B. Minjarez, Ph.D., Seattle Children’s Hospital Autism Center and 
University of Washington School of Medicine, Seattle, WA, Laura Schreibman, Ph.D., University 
of California, San Diego, CA, and Aubyn C. Stahmer, Ph.D., University of California, Davis MIND

Subjects: LCSH: Autistic children—Behavior modification. | Autistic
 children—Education. | BISAC: EDUCATION / Special Education / Mental
 Disabilities. | EDUCATION / Special Education / Social Disabilities.

University of Washington School of Medicine, Seattle, WA, Laura Schreibman, Ph.D., University 
of California, San Diego, CA, and Aubyn C. Stahmer, Ph.D., University of California, Davis MIND 
Institute, Sacramento, CA.
Description: Baltimore, Maryland: Paul H. Brookes Publishing Co., [2020] |
 Includes bibliographical references and index.

2023 2022 2021 2020 2019
10  9  8  7  6  5  4  3  2  1

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# Contents

About the Editors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix About the Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxiii About the Online Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv

## SECTION I Overview

**Chapter 1 Understanding NDBI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3** *Laura Schreibman, Allison B. Jobin, and* *Geraldine Dawson*

ASD Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 History of ASD Intervention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Developmental Science and Its Influence in ASD Early Intervention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Integration of Behavioral and Developmental Sciences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Examples of NDBI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Common Elements of Empirically Validated NDBI . . . . . . . . . . . . . .10

**Chapter 2 Considering NDBI Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21** *Mendy B. Minjarez, Yvonne Bruinsma, and* *Aubyn C. Stahmer*

Early Start Denver Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Enhanced Milieu Teaching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Incidental Teaching/Walden Toddler Program . . . . . . . . . . . . . . . . . 25 Joint Attention, Symbolic Play, Engagement, and Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Pivotal Response Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Project ImPACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

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iv Contents
SECTION II Core Concepts and Foundational Principles
Chapter 3  Selecting Meaningful Skills for 
Teaching in the Natural Environment . . . . . . . . . . . . . . . . . . . . . . .  45
Grace W. Gengoux, Erin McNerney, and 
Mendy B. Minjarez
Goodness of Fit of NDBI Approaches . . . . . . . . . . . . . . . . . . . . . . . . .  46
Functional Skills . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
The Natural Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
Case Example: Jin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  66
Chapter 4  Empowering Parents Through 
Parent Training and Coaching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  77
Mendy B. Minjarez, Elizabeth A. Karp, 
Aubyn C. Stahmer, and Lauren Brookman-Frazee
Parent-Mediated Interventions and NDBI . . . . . . . . . . . . . . . . . . . . .  77
Psychological Functioning in Parents of 
Children With ASD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  79
Effective Parent Coaching Practices . . . . . . . . . . . . . . . . . . . . . . . . . .  82
Case Example: Gabe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Chapter 5  Fostering Inclusion With Peers and 
in the Community  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  99
Aubyn C. Stahmer, Connie Wong, 
Matthew J. Segall, and Jennifer Reinehr
The Importance of Inclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  99
Inclusion in Practice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Use of NDBI in Inclusive Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Practical Suggestions for Incorporating 
NDBI Strategies Into Community Programs . . . . . . . . . . . . . . . . . . .106
Common Challenges to Inclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
Case Example: Preschool Program . . . . . . . . . . . . . . . . . . . . . . . . . . .112
Case Example: Adult Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
SECTION III NDBI Strategies
Chapter 6 Implementing Motivational Strategies . . . . . . . . . . . . . . . . . . . . .  123
Mendy B. Minjarez and Yvonne Bruinsma
NDBI and Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Measuring Motivation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  125
Strategies That Enhance Motivation . . . . . . . . . . . . . . . . . . . . . . . . . .126
Chapter 7 Applying Antecedent Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . .  151
Jennifer B. Symon, Yvonne Bruinsma, and 
Erin McNerney
Preparing to Teach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153

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Contents v

## Chapter 8 Implementing Instructional Cues and

**Prompting Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175** *Kyle M. Frost, Brooke Ingersoll,* *Yvonne Bruinsma, and Mendy B. Minjarez*

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175 Learning Opportunities Across NDBI Models . . . . . . . . . . . . . . . . .177 Prompting Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182 Prompt Fading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187 Examples of Prompts for Specific Skills . . . . . . . . . . . . . . . . . . . . . . .187 Case Example: Leah . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .190

**Chapter 9 Using Consequence Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193** *Allison B. Jobin and Laura Schreibman*

Increasing the Strength of a Behavior . . . . . . . . . . . . . . . . . . . . . . . .194 Decreasing the Strength of a Behavior . . . . . . . . . . . . . . . . . . . . . . . .195 Applying the Premack Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196 Promoting Consequence Effectiveness . . . . . . . . . . . . . . . . . . . . . . .196 Using Consequences to Maintain Behavior Change . . . . . . . . . . . .199 Shaping and Chaining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .201 Using Natural Consequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 Reinforcing Attempts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 Modeling and Expanding on Child’s Response . . . . . . . . . . . . . . . 205 Imitating the Child’s Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 Troubleshooting NDBI Consequence Strategies . . . . . . . . . . . . . . . 206

**Chapter 10 Guiding Meaningful Goal Development . . . . . . . . . . . . . . . . . . . 213** *Grace W. Gengoux, Erin E. Soares, and* *Yvonne Bruinsma*

Formulating Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214 Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .218 Case Example: José. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221 Considerations for Goal Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Case Example: Jenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Case Example: Kaleb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Case Example: Ashir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Developmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 Case Example: Alex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 Case Example: Cole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 Case Example: Josephine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 Case Example: Marco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230

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vi Contents
SECTION IV Applications of NDBI Strategies
Chapter 11 Targeting Communication Skills . . . . . . . . . . . . . . . . . . . . . . . . . .  237
Mendy B. Minjarez, Rachel K. Earl, 
Yvonne Bruinsma, and Amy L. Donaldson
Communication Profile of Children With ASD . . . . . . . . . . . . . . . .237
Communication Development in 
Typically Developing Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  238
Use of NDBI for Targeting Communication . . . . . . . . . . . . . . . . . . .240
Teaching Communication Across 
Developmental Levels Using NDBI Strategies . . . . . . . . . . . . . . . . .249
Chapter 12 Improving Social Skills and Play . . . . . . . . . . . . . . . . . . . . . . . . . .  277
Yvonne Bruinsma and Grace W. Gengoux
Social Initiations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .278
Imitation Skills . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  284
Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  286
Teaching Play With Friends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .297
Chapter 13  Supporting Behavior, Self-Regulation, 
and Adaptive Skills . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  309
Mendy B. Minjarez, Yvonne Bruinsma, 
and Rosy Matos Bucio
NDBI and Challenging Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
Relevant Applied Behavior 
Analysis Interventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .311
NDBI Strategies for Teaching 
Self-Regulation and Adaptive Skills . . . . . . . . . . . . . . . . . . . . . . . . .  322
Promoting Self-Regulation in 
Individuals With ASD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .326
Teaching Adaptive Skills . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .332
Tips for Teaching Self-Regulation and 
Adaptive Skills . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  339
Case Example: Jonas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  341
Chapter 14 Implementing NDBI in Schools . . . . . . . . . . . . . . . . . . . . . . . . . . .  347
Aubyn C. Stahmer, Jessica Suhrheinrich, 
and Laura J. Hall
Including NDBI Components in 
Group or Academic Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  348

Excerpted from: Naturalistic Developmental Behavioral Interventions in the Treatment of Children of Autism Spectrum Disorder Edited by: Yvonne E.M. Bruinsma Ph.D., BCBA-D, Mendy B. Minjarez, Laura Schreibman Ph.D., Aubyn C. Stahmer Ph.D.

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Contents vii

**Chapter 15 Collecting Data in NDBI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361** *Mendy B. Minjarez, Melina Melgarejo,* *and Yvonne Bruinsma*

General Framework for Data Collection . . . . . . . . . . . . . . . . . . . . . .362 Data Collection Across NDBI Models. . . . . . . . . . . . . . . . . . . . . . . . 363 When and Why Data Are Collected . . . . . . . . . . . . . . . . . . . . . . . . . .369 Types of Data and Measurement Systems . . . . . . . . . . . . . . . . . . . . .375 Data Collection in the Natural Environment . . . . . . . . . . . . . . . . . 383

## Chapter 16 Identifying Quality Indicators of

**NDBI Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391** *Aubyn C. Stahmer, Sarah R. Rieth, Brooke Ingersoll,* *Yvonne Bruinsma, and Aritz Aranbarri*

Quality Indicators Versus Common Features . . . . . . . . . . . . . . . . . .391 Specific Program Elements to Look for in a Quality NDBI Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .391

**Chapter 17 Considering Future Directions in NDBI . . . . . . . . . . . . . . . . . . . . 407** *Laura Schreibman, Mendy B. Minjarez,* *and Yvonne Bruinsma*

Research Future Directions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408 Dissemination and Implementation: Future Directions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .410

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .415 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423

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About the Editors

Yvonne Bruinsma, Ph.D., BCBA-D, In STEPPS and In STEPPS Academy, Irvine, 
CA. Dr. Bruinsma is CEO and founder of In STEPPS and In STEPPS Academy, 
a behavioral health agency and a nonprofit private school for children with autism 
in California. She is a Board Certified Behavior Analyst and received her doctorate 
in special education, developmental disabilities, and risk studies in 2004. She has 
been working with families and teaching others how to work with families by

over 20 years. Yvonne’s focus is to blend research and reality in the highest quality 
treatment in a community setting.
Mendy B. Minjarez, Ph.D., Seattle Children’s Hospital Autism Center and University of Washington School of Medicine, Seattle, WA. Dr. Minjarez is a licensed 
psychologist with a background in Applied Behavior Analysis and NDBI. She is 
an assistant professor in psychiatry and behavioral sciences at the University of 
Washington, the Clinical Director of the Seattle Children’s Hospital Autism Center, 
and the Program Director of the Applied Behavior Analysis Early Intervention Program at Seattle Children’s Hospital Autism Center. Dr. Minjarez’s clinical work is 
focused on diagnosis and treatment of autism spectrum disorder, with a particular 
interest in NDBI, parent training, and early childhood. Her research is focused on

dissemination of parent-mediated NDBI, particularly through innovative models, 
such as group parent training.
Laura Schreibman, Ph.D., Department of Psychology, University of California, 
San Diego, La Jolla, CA. Dr. Schreibman served as Director and Principal Investigator of the Autism Intervention Research Program at the University of California 
at San Diego from 1984 until 2012. She is Distinguished Professor Emeritus of 
Psychology and Research Professor at the University of California, San Diego. Her 
most recent research interests have focused on the development and dissemination 
of NDBI strategies, the development of individualized treatment protocols, translation of empirically based treatments into community settings, analysis of language 
and attentional deficits, generalization of behavior change, parent training, and

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x About the Editors
Aubyn C. Stahmer, Ph.D., BCBA-D, University of California, Davis MIND Institute, Sacramento, CA. Dr. Stahmer has been using and studying NDBI strategies 
with children with autism spectrum disorder and their families in research and 
community settings for 30 years. She is an expert in the translation of evidencebased autism research to community-based practice and delivery. The main goals 
of her research include developing ways to help community providers, such as 
teachers and therapists, and helping children with autism and their families by

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About the Contributors

Aritz Aranbarri, Ph.D., The MIND Institute, University of California (UC) Davis 
Medical Center, Sacramento, CA. Dr. Aranbarri is a clinical licensed psychologist specialized as a developmental neuropsychologist (Early Start Denver Model certified 
therapist) and holds a Ph.D. in environmental epidemiology and early neurodevelopment. He received postdoctoral training in Autism Early Intervention Community

Research at the UC Davis MIND Institute mentored by Dr. Aubyn C. Stahmer and 
now coordinates autism research at the SJD Barcelona Children’s Hospital.
Lauren Brookman-Frazee, Ph.D., San Diego Department of Psychiatry, University 
of California, La Jolla, CA. Dr. Brookman-Frazee is Professor of Psychiatry at the 
University of California, San Diego, Associate Director of the Child and Adolescent Services Research Center, and Research Director at the Autism Discovery Institute at Rady Children’s Hospital–San Diego. She specializes in parent-mediated 
interventions for children with autism spectrum disorder (ASD) and other developmental and mental health problems. Dr. Brookman-Frazee’s research involves partnering with mental health and education system leaders, providers, and families

to develop, test, and implement evidence-based interventions in community and 
school-based settings.
Geraldine Dawson, Ph.D., Departments of Psychiatry and Behavioral Sciences, 
Pediatrics, and Psychology & Neuroscience, Duke University, Durham, NC. 
Dr. Dawson is Professor in the Departments of Psychiatry and Behavioral Sciences, 
Pediatrics, and Psychology & Neuroscience at Duke University. She is Past-President 
of the International Society for Autism Research and a member of the Interagency 
Autism Coordinating Committee. She is Director of the Duke Center for Autism and 
Brain Development, an interdisciplinary autism research and treatment center, and 
Chair of the Faculty Governance Committee for the Duke Institute for Brain Sciences. 
Dr. Dawson is Director of a National Institutes of Health Autism Center of Excellence 
Award at Duke focused on understanding early detection, neural bases, and treatment of autism and attention-deficit/hyperactivity disorder. Dr. Dawson has published extensively on early detection, brain function, and treatment of autism. With 
Sally Rogers, she developed the Early Start Denver Model, a comprehensive early 
behavioral intervention for young children with autism. She completed a Ph.D. in

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xii About the Contributors
Amy L. Donaldson, Ph.D., CCC-SLP, Department of Speech and Hearing Sciences, Portland State University, Portland, OR. Dr. Donaldson is an associate professor in the Department of Speech & Hearing Sciences at Portland State University. 
Her research focuses broadly on social-communication and perception of social 
competence in individuals on the autism spectrum and neurotypical individuals. 
Dr. Donaldson examines intervention efficacy, pre- and postprofessional development, the influence of context on performance, and the experiences of neurodivergent individuals in different contexts.
Rachel K. Earl, Ph.D., Seattle Children’s Hospital, Seattle, WA. Dr. Earl earned 
her Ph.D. in school psychology at the University of Washington. She is currently 
a postdoctoral fellow at Seattle Children’s Hospital–Autism Center, specializing in 
diagnosis and treatment of ASD.
Kyle M. Frost, M.A., Department of Psychology, Michigan State University (MSU), 
East Lansing, MI. Mrs. Frost is a doctoral candidate in clinical psychology at MSU 
and a member of the MSU Autism Research Lab. Her research focuses on measuring intervention response and implementation, as well as understanding the 
common elements of Naturalistic Developmental Behavioral Interventions (NDBI).
Erin E. Soares, B.S., Palo Alto University, Palo Alto, CA. Ms. Soares is a third-year 
Ph.D. student at Palo Alto University (PAU) in the clinical psychology program, 
with an emphasis in child and family studies. Prior to attending PAU, Ms. Soares 
graduated from Santa Clara University with a B.S. in psychology and child studies.
Grace W. Gengoux, Ph.D., BCBA-D, Division of Child and Adolescent Psychiatry, Department of Psychiatry, Stanford University School of Medicine, Stanford, 
CA. Dr. Gengoux is a clinical psychologist and Board Certified Behavior Analyst 
who directs the Autism Intervention Program within the Stanford Autism Center 
at Lucile Packard Children’s Hospital. Dr. Gengoux received her Ph.D. in Clinical 
Psychology from the University of California Santa Barbara and completed her 
clinical internship and postdoctoral fellowship at the Yale Child Study Center. 
Her research specifically focuses on the development and evaluation of NDBI for 
young children with ASD. Dr. Gengoux’s previous publications have focused on 
models for enhancing functional communication and social development and for 
providing effective parent training.
Laura J. Hall, Ph.D., Department of Special Education, San Diego State University, San Diego, CA. Dr. Hall is Professor and Chair of Special Education at San 
Diego State University. She has been working with individuals with ASD and their 
families for over 35 years. The focus of her research and teaching has been on the 
transfer of research into practice, or facilitating the implementation of evidencebased practices by supporting educators and paraeducators. She is the author of 
the widely used textbook, Autism Spectrum Disorders: From Theory to Practice (2009, 
Pearson).

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About the Contributors 
Brooke Ingersoll, Ph.D., BCBA-D, Michigan State University (MSU), East Lansing, 
MI. Dr. Ingersoll is an associate professor of clinical psychology at MSU, where she 
is the director of the MSU Autism Research Lab. She is also a licensed psychologist 
and Board Certified Behavior Analyst. Dr. Ingersoll’s research focuses on the development, evaluation, and dissemination of social-communication interventions 
for individuals with ASD. She has published multiple peer-reviewed journal articles and book chapters on ASD and is the coauthor of Teaching Social Communication

to Children with Autism (with A. Dvortcsak; 2010, Guilford Press), an NDBI parent 
training curriculum for children with ASD.
Allison B. Jobin, Ph.D., BCBA-D, Child and Adolescent Services Research Center, 
Department of Psychiatry, University of California, San Diego, Rady Children’s 
Hospital San Diego, San Diego, CA. Dr. Jobin is a licensed clinical psychologist 
and Board Certified Behavior Analyst at the Autism Discovery Institute of Rady 
Children’s Hospital San Diego and study manager in the Department of Psychiatry 
of the University of California, San Diego, and Child and Adolescent Services Research Center. Dr. Jobin has over 15 years of experience in the delivery, supervision, 
and evaluation of evidence-based interventions for children with ASD and their 
families. She specializes in parent-mediated treatment models and NDBI. Her re-

search focus includes evaluating and improving treatment for children with ASD, 
as well as methods for effective implementation in community settings.
Elizabeth A. Karp, M.S., Department of Psychology, University of Washington, 
Seattle, WA. Ms. Karp is a doctoral candidate in child psychology at the University 
of Washington. She is passionate about identifying ways to provide family-centered

care for families with a child with ASD. She is particularly interested in caregivers’ 
experiences as they implement interventions with their young children.
Rosy Matos Bucio, Ph.D., BCBA-D, Santa Barbara SELPA, Santa Barbara, CA. 
Dr. Matos Bucio is a Board Certified Behavior Analyst who completed her doctoral 
training in 2005 at the University of California, Santa Barbara. For over 20 years, 
her research and professional practice has focused on using the motivational strat-

rently provides psychological assessment and therapy to support the mental health 
needs of individuals with ASD and their families.

egies of NDBI to support individuals with ASD across the life span and disseminate best practices to families and professionals.
Erin McNerney, Ph.D., BCBA-D, In STEPPS and McNerney & Associates, Irvine, 
CA. Dr. McNerney is a licensed clinical psychologist and Board Certified Behavior Analyst Doctoral specializing in ASD, developmental disabilities, and behavior 
challenges. She has spent the past 2 decades teaching and implementing Pivotal 
Response Treatment (PRT) and providing behavior-based parent training. She cur-

Excerpted from: Naturalistic Developmental Behavioral Interventions in the Treatment of Children of Autism Spectrum Disorder Edited by: Yvonne E.M. Bruinsma Ph.D., BCBA-D, Mendy B. Minjarez, Laura Schreibman Ph D, Aubyn C. Stahmer Ph D xiv

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xiv About the Contributors
and risk studies from the University of California, Santa Barbara. She is a postdoctoral scholar at San Diego State University and the Child and Adolescent Services

Research Center. She is currently involved in research on the multi-level factors 
affecting the use of evidence-based practices for children with ASD within schools.
Jennifer Reinehr, Psy.D., TEACCH Center, University of North Carolina at Chapel 
Hill, Chapel Hill, NC. Dr. Reinehr is a clinical assistant professor and staff psychologist at the TEACCH Center with the University of North Carolina at Chapel 
Hill. She is specialized in diagnostic and developmental assessment of young children with ASD. For over 10 years, she has provided clinical oversight for an integrated preschool program for young children with and without ASD. Dr. Reinehr

continues to work toward practical application of evidence-based practices in an 
individual’s natural settings.
Sarah R. Rieth, Ph.D., BCBA-D, Child and Adolescent Services Research Center, 
Department of Child and Family Development, San Diego State University, San 
Diego, CA. Dr. Rieth is Assistant Professor of Child and Family Development at 
San Diego State University and an investigator at the Child and Adolescent Services Research Center. She received her Ph.D. from the Psychology Department 
at UCSD in 2012. Her research focuses on intervention for children with ASD and 
their families and the delivery of high-quality intervention in community settings. 
Dr. Rieth is a licensed clinical psychologist and specializes in training others and 
delivering intervention for children with ASD, ages 12 months to 10 years. Her 
current work involves training community providers to deliver parent-mediated

interventions and examining student outcomes from community-based trials of 
evidence-based treatment models.
Matthew J. Segall, Ph.D., Emory Autism Center, Emory University School of 
Medicine, Atlanta, GA. Dr. Segall is Program Director for Education and Transition 
Services at the Emory Autism Center, as well as Assistant Professor of Psychiatry 
and Behavioral Sciences in the Emory University School of Medicine. He is a licensed psychologist in the State of Georgia. Dr. Segall completed his bachelor’s degree in psychology at the University of Virginia and his doctoral degree in school 
psychology at the University of Georgia. His predoctoral internship and postdoctoral fellowship were both completed at the Emory Autism Center, while also completing a fellowship at Georgia State University in the Georgia LEND (Leadership 
Education in Neurodevelopmental Disabilities) program. Dr. Segall’s professional

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About the Contributors 
Jennifer B. Symon, Ph.D., BCBA, Special Education and Counseling, California 
State University Los Angeles, Los Angeles, CA. Dr. Symon is a professor in the 
Division of Special Education and Counseling at California State University, Los 
Angeles. She coordinates the programs in ASD and is a Board Certified Behavior

Analyst. Her research interests include interventions for parents, teachers, paraprofessionals, and peers who support students with ASD.
Connie Wong, Ph.D., Frank Porter Graham Child Development Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC. Dr. Wong is a research 
scientist at the Frank Porter Graham Development Institute at the University of 
North Carolina at Chapel Hill and Adjunct Professor in Early Intervention and 
Early Childhood Special Education at California State University, Los Angeles. Her

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Foreword

The outcomes of children with autism spectrum disorder (ASD) may be about to 
change radically for the better in the next decade. If so, a world of promise, rather 
than a world of challenges, may open to the approximately 66,000 children who are 
born every year in the United States alone who will have autism. This possibility is

than a world of challenges, may open to the approximately 66,000 children who are 
born every year in the United States alone who will have autism. This possibility is 
within the grasp of this coming generation of autism investigators and clinicians to 
attain, in deep collaboration with parents and community providers.
Yet, if we are to succeed in optimizing developmental potential and quality of 
life of the next generations of children with ASD, three priority goals need to be 
achieved. We need to identify ASD early; we need to translate early detection into 
access to evidence-based, effective early treatments; and we need to provide ongo-

achieved. We need to identify ASD early; we need to translate early detection into 
access to evidence-based, effective early treatments; and we need to provide ongoing high-quality supports and solutions to children and families affected by ASD. 
The challenges in these domains are considerable but not insurmountable.
Why is early detection critical? By the time we celebrate a baby’s first birthday, 
his or her brain has doubled, and synaptic density has quadrupled. Brain maturation guides a baby’s experiences, which in turn deeply influences brain organization and continued specialization. By the end of their second year of life, babies 
have undergone their period of maximal lifetime neuroplasticity. By 18–24 months, 
there may be an emergence of autism symptoms, making possible reliable diagnosis by expert clinicians. For treatment to have optimal benefits, there is a need to 
capitalize on this early brain malleability, before speech-language and communication development is severely derailed and problem behaviors become entrenched. 
Yet, the median age of autism diagnosis has not changed in consecutive cohorts 
followed by Centers for Disease Control and Prevention surveillance efforts. Fifty 
percent of children with autism are diagnosed after the age of 4–5 years, and children from underserved populations—minorities, low income, rural—are diag-

believe that populationwide surveillance programs can effectively deploy universal screening for ASD and related developmental delays and that the screening 
process can be made actionable via increased access to diagnostic services.
The promise of early detection can only be delivered if screening programs 
are shown to increase access to effective early intervention services. Most stud-

ies of early treatment in autism have shown major benefits in learning and language acquisition. Yet, it is likely that the potential benefits of early treatment have

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xviii Foreword
been grossly underestimated. One reason may be the fact that most investigations have focused on children age 3 years old and older; another reason may be 
the fact that most studies have reported on relatively small studies conducted by 
research groups rather than on population trends resulting from federally mandated birth-to-3 services. More studies are needed of early treatment involving 
toddlers if we are to take neuroplasticity seriously, and more “big data” studies 
of state-by-state indicators of service access and outcomes are needed if we are 
to judge the populationwide effects of the Program for Infants and Toddlers with 
Disabilities (Part C) of the Individuals with Disabilities Education Act (IDEA), and 
of the now 11-year-old recommendations of the American Academy of Pediatrics. 
The promise is clear: Optimize development and learning potential by age 3 years, 
and the child’s lifetime prospects are likely to change dramatically; make highquality early treatment accessible, and the longtime, financial equation burdens 
are alleviated for individual families and for the entire health care and education 
systems. Yet, a large number of children with ASD receiving special education in 
their school years have not benefited from early treatment, and some who receive

easily identified, studied, and promoted. This book is a victory of common sense: 
a consensual framework that will serve as the basis for improvements of treatment 
efficacy, effectiveness, and community uptake in what is now the highest priority, 
with potentially the highest gains in the field.
Why is the provision of supports and solutions to children and families 
affected by ASD so critical? Although early detection and intervention promise 
life-changing opportunities for the next generations of children with autism, those 
affected by ASD now cannot wait. Families, community providers, and schools 
can deploy treatments that work in fostering communication and adaptive skills 
and that decrease the risk of problem behavior. Communication skills facilitate 
meaningful inclusion and make possible friendships and other relationships, as 
well as a world of vocational opportunities. Adaptive skills promote independence, 
self-reliance, and self-determination. The management of challenging behavior 
decreases the risk of isolation, enhances quality of life, and makes it possible for

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 Foreword xix
through the struggles of the day; providers are often overwhelmed at the very sight 
of the plethora of titles sitting on their book shelves that do not necessarily translate 
into a concrete plan and approach for their day of therapy and teaching. How are 
we to distill from this chaotic state the straightforward principles of treatment and 
supports that work, the roadmap to generate learning that generalizes, and the

we to distill from this chaotic state the straightforward principles of treatment and 
supports that work, the roadmap to generate learning that generalizes, and the 
strategies to promote communication skills that are self-driven and effective across 
environments?
The solution, again, is in your hands. This book describes ways to leverage 
children’s daily lives as the stage for their learning. Teach skills in isolation, and 
the road from skill acquisition to spontaneous skill deployment is a much longer 
and winding road. The importance of developmental considerations is extended 
to all ages: Not only are the children with ASD growing up, but so are their peers. 
And with the passage of developmental stages comes the unfolding of increasingly 
more challenging environmental demands. Remove therapy and supports from the 
developmental context in which they need to work, and one may witness further 
isolation, prompt dependency, and reduced adaptation. Similarly, the reader will 
learn about environmental controls and reinforcement management techniques 
that foster habit formation, accelerate skill learning, and promote self-motivation 
and self-regulation. Fail to consider that, and you may find yourself struggling 
with continued disruption, lack of engagement, despondency, and heightened anx-

and self-regulation. Fail to consider that, and you may find yourself struggling 
with continued disruption, lack of engagement, despondency, and heightened anxiety. These are principles of treatment and intervention that should guide our work 
with children of all ages, from infancy through adolescence and beyond.
How does this book achieve the sorely needed synthesis? First and foremost, it 
represents the culmination of some 50 years of science in early treatment of autism, 
a process that has greatly accelerated in the past 10 years. Facts matter, and science has produced a great body of evidence justifying the integrative approach 
taken by the authors. In this approach, there is great respect for a clinical principle, 
enshrined in the language of educational law, that treatments and intervention programs should be individualized to a child’s profile, addressing the child’s needs 
while capitalizing on the child’s assets. This principle unravels many of the ideological debates. A treatment devised to promote communication skill acquisition in a 
nonverbal 6-year-old at risk of never speaking is unlikely to be beneficial in the case 
of a 2-year-old who vocalizes and shows intent to communicate with others, albeit 
inconsistently, and vice versa. There is no need to train a child to display a complex 
behavior by chaining discrete and disconnected behaviors if the child has the ability to learn how to learn in more naturalistic settings. In this way, generalization

ity to learn how to learn in more naturalistic settings. In this way, generalization 
challenges are reduced; prompts and consequences are inherent in the real world; 
and pivotal skills generate more learning, in more settings, and in more contexts.
The authors also leverage behavioral science in ways that do not turn it into a 
stereotype. The science of Applied Behavior Analysis (ABA) has generated some of 
the most critical advances in the care of individuals with developmental disabilities. Anyone who has worked in a residential facility for individuals with severe 
disabilities is quick to appreciate this fact. But ABA is not synonymous to narrow 
applications that may have its place for some children but not for others. ABA is a 
vast body of science that painstakingly assesses and changes human behavior. At 
its core is learning theory with its focus on an individual’s behavior acquisition

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xx Foreword
surroundings. Making these connections is central to the acquisition of speech, language, and communication. We fail to follow ABA principles at our peril; indeed,

surroundings. Making these connections is central to the acquisition of speech, language, and communication. We fail to follow ABA principles at our peril; indeed, 
we are all behaviorists in real life, but unfortunately most of us are bad behaviorists, often pre-empting the very result we seek to achieve.
By advancing individualized, naturalistic approaches and the basic scientific 
tenets of learning theory, there should be no surprise that the individual child, his 
or her style of learning, and his or her perceived environment take center stage in 
any effective program of treatment and intervention. In between an antecedent 
and a response, there is a single child with a specific age and stage of development, 
assets and needs, emotional state, capacity for self-regulation, motivations, social 
relatedness, interests, fears, and personalized environment. For too long, learning 
theorists proceeded in their scientific endeavors by pretending to ignore a child’s 
individualized agency: The brain is no black box! Similarly, for too long, developmental scientists proceeded in their scientific endeavors by focusing on sweeping 
generalities that were not easily translatable into manualized treatments capable 
of singling out active ingredients and of achieving greater fidelity. Why these two 
currents of human ideas forged parallel paths for so many decades is as infuriating 
as it is counterproductive to any evidence-based synthesis of effective treatment for 
young vulnerable children. Thankfully, the authors of this book leave this anachronistic notion behind us all. The behaviorists versus developmentalist confronta-

young vulnerable children. Thankfully, the authors of this book leave this anachronistic notion behind us all. The behaviorists versus developmentalist confrontation should be relegated to the history of the field, thus erased and eradicated from 
its future science and its future scientists.
By moving the nonsensical aside, and by leveraging the best science from 
within, this book generates a consensual synthesis, whose name includes the very 
words that generated this unsatisfactory state of artificial conflagration in our past: 
Naturalistic Developmental Behavioral Interventions. The very name is our best

words that generated this unsatisfactory state of artificial conflagration in our past: 
Naturalistic Developmental Behavioral Interventions. The very name is our best 
assurance that research on early treatments will continue to thrive on healthy scientific grounds.
This book is more than a compilation of evidence-based treatment principles; it 
is also a recipe for viability and for increased access. In an early intervention world 
of scarce resources, to state that a 40-hour regimen of treatment delivered by an 
expert clinician is aspired standard of care, as we have learned to believe over the 
past 2 decades, is a recipe for frustration. With few exceptions in the country, most 
states, where maybe 1–2 hours a week is the reality of treatment, need more viable 
solutions. Children need to access effective services when they need them and 
where they are. For that to happen, a number of stakeholders need to be involved. It 
is the responsibility of investigators and clinicians to use the best implementation 
science to generate innovations that can be deployed in the real world, advancing 
quality as well as accessibility. Parents need to be engaged in the most important 
role in their lives: to promote the development of their children. Parent-mediated 
interventions are emerging as both viable and effective: Professional interventionists can use their limited availability to train parents to turn every waking moment 
of the child’s life into a learning moment, using routine daily activities as naturalistic platforms for treatment, with the intensity and emotional engagement needed 
to achieve lasting results. Similarly, generalist child development providers and 
teachers can promote similar principles in group settings. In this fashion, a new

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Most important, the involvement of parents and child care providers allows 
treatments to be downward extended into toddlerhood and maybe even infancy: 
There is no reason to wait until a diagnosis is attained to turn surveillance and 
parent education into strategies that promote development—of all children. All 
vulnerable children, and certainly those with autism, are likely to benefit from 
a robust dosage of facilitation of social and communication engagement. This is 
already the approach taken by those trying to counter the effects of intergenerational poverty on a child’s language acquisition. And therein lies one of the greatest promises in the field: the beneficial effects of child development surveillance 
and parental engagement on the outcomes of all children. Perhaps if we were to 
deploy these generalist strategies systemically in a communitywide fashion, chil-

deploy these generalist strategies systemically in a communitywide fashion, children would reach the age of more individualized and intensive treatments at a 
much higher level of readiness to learn.
These may seem like lofty aspirations. Yet, after the publication of this book, 
we, as a field, are closer to these goals than ever before. The authors have made a

terrific contribution in our effort to ensure that every child with ASD is afforded

what they need in order to fulfill their promise.

Ami Klin, Ph.D.

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Acknowledgments

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xxiv Acknowledgments
I would like to acknowledge those who have supported me and my career personally, and those who have made this work possible through their contributions to 
the field. Personally, I could not have asked for a better colleague, coauthor, and 
friend than Yvonne Bruinsma. I am also grateful to my mentors and colleagues for 
the knowledge and opportunities they have provided, including Marji Charlop, 
Ami Klin, Bob and Lynn Koegel, Tara O’Connor, Bryan King, and Maddie Parsons. 
The body of work that has preceded the NDBI framework must be fully acknowledged because it is the foundation for the content of this book, which we believe 
will propel the field forward. I have also learned so much from the children and 
families that I work with, which I anticipate will continue lifelong; however, my 
greatest teachers are my own children, who have taught me that life is messy and

hard but full of humor and joy, which I hope carries over to the rest of my career

Mendy B. Minjarez, Ph.D.
Over many years, I have had the good fortune to work with amazing students, 
colleagues, researchers, teachers, and community members of all kinds. Most important, I have had the good fortune to work with wonderful children and families 
who have taught me so much and have showed me the real power of what we do 
and what we can accomplish. I want to acknowledge the efforts of all these people

who have worked so hard at getting us to where we are today. I see the develop-

ment of NDBI as the fruit of these efforts.
Laura Schreibman, Ph.D.
Many people have devoted their time and expertise to make this project a reality. 
First, thank you to all the amazing NDBI developers willing to support the integration of their individual evidence-based interventions into a coherent model. 
Each reviewed the descriptions of their respective interventions in this book and 
supported the concept of NDBI through the original article. Second, thank you to 
all my colleagues who helped shape my understanding of NDBI across contexts. 
Third, thanks to my research and treatment teams in San Diego and Sacramento,

who bring it all to life. Finally, thank you to all the children, families, teachers, 
therapists, and advocates who have supported this work.

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Overview

Excerpted from: Naturalistic Developmental Behavioral Interventions in the Treatment of Children of Autism Spectrum Disorder Edited by: Yvonne E.M. Bruinsma Ph.D., BCBA-D, Mendy B. Minjarez Laura Schreibman Ph.D., Aubyn C. Stahmer Ph.D.,

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Understanding NDBI

Understanding NDBI

utism spectrum disorder (ASD) affects as many as 1 in 59 children (Baio 
et al., 2018). Although this statistic certainly has an impact across ser-
Avice systems, the impact is far greater for those individuals and families 
affected. While ASD may have been considered a dire prognosis for these children 
and families from the 1950s through the 1980s and beyond, the state of affairs is 
much brighter today. Research since the 1960s conducted across multiple academic 
disciplines has led to the identification and development of treatments for ASD 
that are both highly effective and efficient. The development of these effective 
intervention strategies, coupled with an ability to diagnose ASD at earlier ages, has 
broadened and strengthened the positive effect of treatment efforts. Early intervention by using empirically based treatments has proven to have a substantial impact 
on the future functioning of children with ASD, changing the outlook for these 
individuals and their families (e.g., Dawson, 2008; Dawson et al., 2012; Rogers & 
Dawson, 2010). Although early intervention using these newer strategies has certainly improved the prognosis for young children with ASD, treatments based on 
these same principles have also proven to be effective for individuals throughout 
the life span, as well as for individuals with related disorders that share some of

these same principles have also proven to be effective for individuals throughout 
the life span, as well as for individuals with related disorders that share some of 
the same features of ASD (e.g., language acquisition delays, behavior problems, 
cognitive impairment).
Our goal in writing this book was to describe a scientifically validated set 
of interventions, derived primarily from the fields of Applied Behavior Analysis 
(ABA) and developmental psychology. These interventions are called  Naturalistic 
Developmental Behavioral Interventions (NDBI) to reflect the essential combined contributions of these two disciplines. As described in later chapters, there are several 
established NDBI utilized with children with ASD and related disorders; although

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4 Overview
the concepts and procedures that unite them, and provides an implementation 
guide for practitioners and others who wish to use NDBI with children with ASD. 
Section I introduces NDBI and key NDBI models. Section II explains core concepts 
and foundational principles common to all NDBI, highlighting topics such as the 
selection of meaningful skills, parent empowerment, and inclusion. Section III

and foundational principles common to all NDBI, highlighting topics such as the 
selection of meaningful skills, parent empowerment, and inclusion. Section III 
dives deeper into specific NDBI strategies, and Section IV offers an implementation- 
focused look at NDBI in practice.
This book is a resource for practitioners, educators, and other professionals 
who make treatment decisions for children with ASD. Those searching for ASD 
treatment are often confused and overwhelmed because there is so much information available. Much of what is available via the web or other sources is not likely to 
be helpful and can even be harmful. Some proposed treatments have proven to be 
dangerous (e.g., certain drug regimens or chelation). Other treatment approaches 
elevated through celebrity advocacy, although perhaps the most visible, often lack 
evidence for effectiveness. Furthermore, even if a child receives a relatively benign 
but not scientifically validated treatment (e.g., equine or dolphin therapy), it still

evidence for effectiveness. Furthermore, even if a child receives a relatively benign 
but not scientifically validated treatment (e.g., equine or dolphin therapy), it still 
can be harmful if it is costly or results in the child spending less time in effective 
treatment.
There are so many treatments and claims of effectiveness (often patently 
false) that the process of identifying effective interventions for a child with ASD 
too often becomes a burden for parents and treatment providers. This book offers 
a solution by not only identifying proven treatments but also by describing the 
basic, important concepts that characterize such treatments to help parents, 
teachers, and practitioners decide if interventions meet the standards of established NDBI. Although specific NDBI may have different names, such as Pivotal 
Response Treatment (or Training) (PRT), Early Start Denver Model, and Project 
ImPACT, they all involve the same important core concepts discussed in this 
book. Our hope is that by helping parents, teachers, and practitioners determine

ASD DEFINED
Before diving in to the more complicated topics that follow in this book, perhaps 
it is best to establish a common understanding of what we mean by autism spectrum disorder (ASD). Autism was first identified as a specific disorder by Leo 
Kanner in 1943. Kanner described a group of children who exhibited a set of 
features unlike those of any other known pediatric disorder. These features included severe social deficits, such as failure to bond with parents, social avoidance of others, failure to establish eye contact, failure to acquire language or 
particular pathological features of language if it did develop, lack of appropriate 
interaction or interest in toys or other features of the environment, and the presence of repetitive, nonpurposeful behaviors. He also believed that these children 
possessed normal or above-normal intelligence. Kanner named this disorder 
early infantile autism to describe the fact that the symptoms were exhibited very 
early in life and involved a severe withdrawal. Since 1943, much has changed in

whether a treatment meets the standard of research-based practice, we will make 
the initially unmanageable, manageable.

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Understanding NDBI 
According to the  Diagnostic and Statistical Manual of Mental Disorders, Fifth

According to the  Diagnostic and Statistical Manual of Mental Disorders, Fifth 
Edition (DSM-5; American Psychiatric Association, 2013), the following diagnostic 
criteria for ASD have been established:
1. Persistent deficits in social-communication and social interaction such as

1. Persistent deficits in social-communication and social interaction such as 
abnormal social approach, reduced sharing of emotions or affect, and failure to 
initiate or respond to the social initiations of others
2. Persistent deficits in verbal and nonverbal behaviors used for social interaction, such as failure to develop speech, inadequate eye contact, failure to use or

tion, such as failure to develop speech, inadequate eye contact, failure to use or 
understand gestures for social purposes, failure to develop and maintain social 
relationships, and absence of interest in, or sharing with, peers
3. Presence of restricted, repetitive patterns of behavior, interest, or activities 
(including stereotyped or repetitive motor movements or use of objects; inflex-

(including stereotyped or repetitive motor movements or use of objects; inflexibility to changes in routines; and highly restricted, fixated interests that are

ibility to changes in routines; and highly restricted, fixated interests that are 
abnormal in intensity of focus)
4. Hyper- or hyporeactivity of the sensory environment
Also, whereas Kanner did not associate autism with cognitive impairment, a significant number of these individuals do experience cognitive impairment. (See the

nificant number of these individuals do experience cognitive impairment. (See the 
DSM-5 and Autism Speaks at http://www.autismspeaks.org for a more detailed 
and comprehensive description of ASD.)

and comprehensive description of ASD.)
HISTORY OF ASD INTERVENTION
To fully appreciate where the field of ASD intervention is now, it is important to 
look back at where the field began and how it has progressed. Prior to the early 
1960s, educators widely assumed that children with ASD could not learn. The early 
work of Charles Ferster and Marian DeMyer (1961, 1962) demonstrated that children 
with ASD could learn a simple task if their responses reliably resulted in a positive 
effect. The task was pressing a lever for candy in the presence of a stimulus, and 
the positive effect was delivery of candy. Although this was not a particularly functional curriculum, it did demonstrate that the principles of learning could be used 
effectively to teach children with ASD. This early work was followed by a substantial increase in the study of operant learning approaches to teach a variety of skills. 
Examples of these skills include language (Lovaas, Berberich, Perloff, & Schaeffer, 
1996; Risley & Wolf, 1967), social skills (Ragland, Kerr, & Strain, 1978; Strain, Kerr, 
& Ragland, 1979), play (Koegel, Firestone, Kramme, & Dunlap, 1974; Lifter, Sulzer-
Azaroff, Anderson, & Cowdery, 1993; Stahmer, 1999; Stahmer & Schreibman, 1992), 
adaptive skills (Ayllon & Azrin, 1968; Baker, 2004), and academic skills (McGee, 
Krantz, & McClannahan, 1986; McGee & McCoy, 1981), as well as skills to reduce

is used by everyone (e.g., saying “please” to request a treat will become a stronger

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6 Overview
response if the treat follows saying the word). The field of ABA has established 
many of these laws and continues to refine understanding of how to improve the

response if the treat follows saying the word). The field of ABA has established 
many of these laws and continues to refine understanding of how to improve the 
life of others. It offers specific experimental methodologies to investigate and prove 
the effects of procedures aimed at changing behavior.
The application of behavioral principles to teach new skills and reduce behavioral challenges for children with ASD took a huge leap forward through the work 
of Ivar Lovaas; Lovaas and his colleagues developed an intensive and comprehensive intervention program that focused on many of these skills (Lovaas, 1987, 2002). 
Although Lovaas’s successes, and those of other behavioral researchers, propelled 
behavioral treatment into the forefront, his 1987 treatment study had the most profound impact. In that study, Lovaas provided intensive (i.e., up to 40 hours per 
week) behavioral intervention to a group of young children with ASD. In contrast 
to a control group of children who did not receive the treatment at such intensity, 
the children in the experimental group showed significant gains in IQ score and 
success in typical school placements. This work greatly altered the expectations 
of treatment, especially early treatment, for ASD. The field began to realize that 
tremendous progress, potentially leading to limited ongoing need for services and 
supports, might be possible for almost half of children with ASD if they receive 
excellent treatment early enough and with enough intensity. This work, and subse-

supports, might be possible for almost half of children with ASD if they receive 
excellent treatment early enough and with enough intensity. This work, and subsequent studies demonstrating efficacy of early intervention, led to two main trends 
in ASD treatment.
First, parents, understandably very encouraged by these findings, began advocating for their children to receive early intensive behavioral intervention, which 
led to changes in educational practices and policies. Second, discrete trial training 
(DTT), the behavioral approach used in Lovaas’s (1987) study, became increasingly 
popular. In brief, DTT involves one system of implementation of operant methodology. In this type of intervention, teaching is conducted via successive discrete trials, with each trial consisting of an antecedent (a cue to indicate when a response

als, with each trial consisting of an antecedent (a cue to indicate when a response 
should be emitted), a response or behavior, and a consequence (an event following 
the response). We call this the three-term contingency and abbreviate it A-B-C.
In DTT, educators break skills down into smaller, separate components and 
teach them one at a time using discrete training trials until the complete skill is 
acquired. For example, if a teacher wanted to teach a child to put on a pair of pants 
when told to put on pants, he or she might first teach the child to point to a pair 
of pants when told to put on pants. Once the child reliably points to the pants, the 
teacher would teach the next component of the skill by requiring the child to point 
to and then pick up the pants. Once that is mastered, the child would be required 
to put one leg in the pants and so forth until the child could perform the entire skill

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Understanding NDBI 
limitations and otherwise improving and expanding treatment effectiveness. 
Advances in the developmental sciences—particularly those in the area of promoting early communication skills, social engagement, and affective engagement—set 
the stage for advancing early intervention methods beyond the highly structured 
format of DTT. The marriage of ABA principles and principles derived from developmental science has proven to be particularly important and relevant because the

ability to diagnose ASD in children at earlier ages has led to an increased number 
of children receiving early intervention.

DEVELOPMENTAL SCIENCE AND ITS 
INFLUENCE IN ASD EARLY INTERVENTION
In the late 1980s and 1990s, researchers started to think that ASD could be best understood by explaining how the developmental trajectory of children with the diagnosis deviated from that of typically developing children. This perspective was 
fueled by the emergence of the field of developmental psychopathology (Cicchetti, 
1989), which allowed for the scientific study of atypical development. Researchers 
realized that typical and atypical development are mutually informative and that 
their understanding of ASD would be enhanced by studying the basic processes 
that caused development to diverge from typical pathways. This led to a search 
for the earliest fundamental developmental processes that could explain the core 
symptoms of ASD. At this time, there was also greater emphasis on longitudinal

tional cues (Sigman, Kasari, Kwon, & Yirmiya, 1992). Studies of home videotapes 
showed that young infants who later developed ASD did not orient to name, 
point, show, or make eye contact, demonstrating the earliest symptoms of ASD by 
10–12 months of age (Werner, Dawson, Osterling, & Dinno, 2000).
These findings began to shape both the strategies used in early intervention and the targets of intervention. For example, theories of typical development 
emphasized the active role of the child in constructing both the social and nonsocial world. Researchers found that even young infants learn by forming ideas 
or hypotheses and then testing these ideas through playing with objects, interacting with people, and using social interaction to test those hypotheses (Saffran, 
Aslin, & Newport, 1996). Thus, researchers focused intervention methods more 
on children’s initiation and spontaneity rather than on their response to cues and 
prompts. Likewise, research on typically developing infants and young children 
showed that learning is promoted when that learning occurs in the context of an 
affectively rich social environment, such as social play involving smiling and eye

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8 Overview
(Dawson et al., 1990). Thus, ASD treatments began using strategies to promote 
affective engagement (e.g., Prizant et al., 2003; Rogers & DiLalla, 1991), or using 
social emotion to act on and respond to the world. Studies of typically developing 
infants found that early emerging skills, such as joint attention and imitation, were 
critical for setting the stage for a wide range of later skills. As a result, early inter-

critical for setting the stage for a wide range of later skills. As a result, early intervention began targeting skills that were fundamental precursors to the development of language, including joint attention (Mundy, Sigman, & Kasari, 1990).
As the theoretical frameworks and research findings from the fields of developmental psychology and developmental psychopathology were incorporated into 
early intervention models, it became clear that they could be readily integrated 
with the strategies of ABA. This integrated approach improved children’s motivation to learn, speed of acquisition of skills, and ability to generalize newly acquired

skills to novel environments. NDBI were the result of this integration of developmental and ABA principles.

mental and ABA principles.
INTEGRATION OF BEHAVIORAL AND DEVELOPMENTAL SCIENCES
Despite their distinct theoretical foundations, methodologies, and implications 
for intervention, the fields of behavioral and developmental science came together 
with the emergence of NDBI (see Schreibman et al., 2015). These interventions incorporated components of both fields, demonstrating that integrating behavioral 
and developmental sciences had a profound effect. The merging of these two fields 
led to interventions that are informed by the strengths of each perspective and 
that better serve the younger ASD population in particular. NDBI essentially are 
research-based interventions that incorporate well-established behavioral interventions to affect developmentally important and appropriate behavior change.

ventions to affect developmentally important and appropriate behavior change. 
Thus, NDBI ensure that the treatment strategies employed remain guided by understanding of child development.

ing targets, contexts in which the interventions are delivered, and instructional 
strategies (see Schreibman et al., 2015).

strategies (see Schreibman et al., 2015).
Nature of Teaching Targets
The teaching targets selected in NDBI typically come from a broad range of developmental domains, including language and communication, play, social interaction, cognition, and motor skills. The skills are selected based on the cascading 
effect (i.e., flow or progression from lower level skills toward higher level skills) 
and the foundational role they play in later development, especially in regard to the 
core social deficits of ASD. These skills include imitation; shared and reciprocal engagement; joint attention; and functional communication via the use of gestures, 
facial expressions, and words, among others. Moreover, various domains are targeted concurrently during learning episodes, in contrast to more highly structured 
methods that may teach each domain separately. This distinction reflects a developmental systems approach, whereby different skills are integrated from the start 
to promote generalization. Generalization is the use of skills across various people, 
places, and materials with the ultimate goal of promoting long-lasting and func-

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same words during dinnertime at home or during another daily routine. During

these activities, the therapist or parent would also incorporate other developmental 
skills, such as gesture use, imitation, shared engagement, or joint attention.

skills, such as gesture use, imitation, shared engagement, or joint attention.
Contexts of Treatment Delivery
The empirical literature has provided evidence that children’s experiences affect 
neurobiological development (Dawson et al., 2012; Knudsen, 2004) and that experiences have a cascading effect on development (e.g., Thelen & Smith, 1994). The 
contexts in which early learning occurs need to allow children to experience the 
natural contingencies of their own behavior (Gibson, 1973). For example, asking 
an adult for help reaching a toy leads to acquiring the toy. Increasing evidence is 
emerging that learning is enhanced when it is embedded in activities that contain 
emotionally meaningful social interactions, compared to situations in which instruction occurs without meaningful social engagement (Topál, Gergely, Miklósi, 
Erdohegyi, & Csibra, 2008). Spelke, Bernier, and Skerry (2013) argued that providing children the opportunity to learn within a socially engaged context sets the 
stage for them to learn about the social landscape around them. For example, an 
educator can teach a child about different pieces of furniture by teaching the labels 
chair or table separately, but learning is improved if a social partner teaches the

chair or table separately, but learning is improved if a social partner teaches the 
child while playing house. The child could sit a doll in the chair or put a dish on 
the table for his or her mother so that the child learns the pieces of furniture within 
the context of the natural environment.
In NDBI, these concepts are brought to fruition through child-initiated and 
motivation-based (i.e., following the child’s preferences) interactions. These interventions take place during enjoyable play routines and familiar daily routines 
using a variety of materials. Teaching usually looks and feels like the everyday 
interactions that are central to toddler experiences. In fact, first-time observers 
of these approaches have said they do not look like therapy. Parent and family 
involvement is also common to NDBI because it broadens the context in which 
teaching occurs and increases the frequency of learning opportunities. Learning 
opportunities include imitating facial expressions and actions, identifying body 
parts during bath time with mom or dad, or building shared engagement and 
social initiations during a game of Peekaboo or chase with the child’s therapist. 
Skill acquisition has been shown to be more effective in engaged contexts such as 
these (Dawson et al., 2010; Delprato, 2001). Thus, specific characteristics of learning 
contexts, including the activities, materials, and quality and emotional valence of

the adult–child interaction, contribute toward optimal learning and generalization 
of newly developing skills.

of newly developing skills.
Instructional Strategies
Finally, NDBI have in common the use of development-enhancing strategies, which 
are described in more detail in other chapters. These strategies promote learning 
and motivation within ecologically valid contexts and routines. At first, the child 
may learn through highly predictable and salient response–reinforcer sequences. 
For example, he or she may get to push a car down a steep ramp after making

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10 Overview
enjoyment around that theme with the therapist. By incorporating behavioral 
strategies, such as  modeling, shaping, chaining, prompting, and  differential 
reinforcement, the therapist, teacher, or parent supports the child throughout these 
activities in the development of expressive communication, receptive language understanding, early cooperative play, and shared engagement. The rewarding value 
of these child-centered, everyday activities maximizes motivation. Research has

of these child-centered, everyday activities maximizes motivation. Research has 
also demonstrated a decrease in maladaptive behaviors as they are replaced with 
more functional, adaptive skills (e.g., Carr & Durand, 1985).
These skills are relevant for older individuals as well. Although this feature 
of NDBI is most commonly utilized in early intervention, researchers and practitioners realize the importance of skills such as imitation and joint attention as 
foundations for many more advanced skills. For example, joint attention skills are 
an important component of successful social interaction. Thus, they are good skills 
for older individuals learning social skills. These skills need to be taught at any age

if the individual has not already acquired them. Another key feature of NDBI is 
that the components can be adapted for any age and any skill area.

that the components can be adapted for any age and any skill area.
EXAMPLES OF NDBI
While developing interventions for ASD, several clinical research laboratories independently realized the need for more naturalistic treatments that would greatly expand on the earlier work of Hart and Risley (1968) and increased focus on strategies 
that would enhance child motivation and improve generalization of learned skills. 
Thus, these laboratories established distinct NDBI that had several commonalities. 
Examples include incidental teaching (IT; Hart & Risley, 1968, 1975; McGee, Morrier, 
& Daly, 1999), Pivotal Response Treatment (Koegel & Koegel, 2006; Koegel et al., 
1989; Schreibman & Koegel, 2005), the Early Start Denver Model (ESDM; Dawson et 
al., 2012; Dawson et al., 2010; Rogers & Dawson, 2010; Rogers, Dawson, & Vismara, 
2012), Enhanced Milieu Teaching (EMT; Kaiser & Hester, 1994), Project ImPACT 
(Improving Parents as Communication Teachers; Ingersoll & Wainer, 2013a, 2013b), 
and Joint Attention, Symbolic Play, Engagement, and Regulation (JASPER; Kaale, 
Fagerland, Martinsen, & Smith, 2014; Kaale, Smith, & Sponheim, 2012; Kasari, 
Gulsrud, Wong, Kwon, & Locke, 2010; Kasari, Kaiser, et al., 2014; Kasari, Lawton, 
et al., 2014; Kasari, Paparella, Freeman, & Jahromi, 2008). Although this list is not 
exhaustive, it includes many of the models with the most research, each of which 
is discussed in greater detail in Chapter 2. Some of the intervention models are 
comprehensive (i.e., they target a broad range of functioning across multiple developmental domains), whereas others are focused interventions that address specific

areas of behavior or development (e.g., social-communication only). The emphasis 
throughout this book, however, is on the commonalities among these NDBI.

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Ready, Set, Implement!

Ready, Set, Implement!

Ready, Set, Implement!

BOX 1.1: What are the common elements of empirically validated NDBI?
Core Components

Core Components
• Are based on the well-established principles developed via the science 
of ABA

of ABA
• Use developmentally based intervention strategies and sequences to

• Use developmentally based intervention strategies and sequences to 
guide goal development that is individualized to each child
Common Procedural Elements

Common Procedural Elements
• Have an intervention manual or manuals that clearly specify the

• Have an intervention manual or manuals that clearly specify the 
procedures of the intervention

procedures of the intervention
• Include procedures for assessing treatment fidelity

• Include procedures for assessing treatment fidelity
• Involve ongoing measurement of progress during treatment
Common Instructional Strategies
• Specify how the environment should be arranged to ensure that the child

• Specify how the environment should be arranged to ensure that the child 
must initiate or interact with an adult in order to gain access to desired

must initiate or interact with an adult in order to gain access to desired 
materials, favored activities, or familiar routines

materials, favored activities, or familiar routines
• Utilize natural reinforcement and other motivation-enhancing procedures

• Utilize natural reinforcement and other motivation-enhancing procedures
• Use prompting and prompt fading during acquisition of new skills

• Use prompting and prompt fading during acquisition of new skills
• Use balanced turns within teaching routines

• Use balanced turns within teaching routines
• Use modeling

Core Components of NDBI

continuum of emphasis/degree across NDBI.
• All evidence-based NDBI are based on the well-established principles developed via the science of ABA.
As might be expected from ABA-based strategies, NDBI all involve the threepart contingency of antecedent → behavior (response) → consequence, which 
helps the child understand when to respond and ensures that the intervention 
provides feedback to the child. Although more recent strategies for ASD intervention, such as NDBI, differ in various forms from earlier behavioral interventions, the basic tenets of NDBI are the same as those of their original ABA 
roots. For example, Skinner’s (1953) work on motivation and Stokes and Baer’s 
(1977) seminal work on enhancing generalization of intervention effects are

• Use modeling
• Utilize adult imitation of the child’s language, play, or body movements

Core Components of NDBI
This section discusses foundational tenets underlying all NDBI, presented along a 
continuum of emphasis/degree across NDBI.

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12 Overview
Motivation to respond is enhanced when rewarding events can be anticipated. 
NDBI utilize strategies that promise these rewards (reinforcers) for responding 
and thus increase the child’s motivation to respond. Stokes and Baer (1977) described how generalization of acquired behaviors may be enhanced by utilizing a specific set of teaching strategies. To illustrate, a generalization-enhancing 
strategy is to use multiple examples of materials during training. Thus, when 
teaching a child the concept of a car, the teacher would utilize cars of various 
colors, shapes, and sizes to ensure the child learns the general concept of car 
instead of learning car means a red object of medium size on a specific table.

instead of learning car means a red object of medium size on a specific table. 
NDBI employ strategies to ensure that the child’s teaching environment contains a variety of stimuli.
• Having a base in developmental science, NDBI use developmentally based

• Having a base in developmental science, NDBI use developmentally based 
intervention strategies and sequences to guide goal development that is individualized to each child.
Some NDBI are associated with a specific developmental assessment and curriculum (e.g., ESDM; Rogers & Dawson, 2010). In almost all NDBI, goals are 
developed with the use of standardized assessment, observation, and developmental checklists, which serve to guide the clinician in determining individu-

alized treatment targets across behavior domains. Strategies for assessment 
and goal development are outlined in detail in later chapters.

and goal development are outlined in detail in later chapters.
Common Procedural Elements
Common procedural elements are procedures that consistently accompany use of

of implementation, but manuals alone are unlikely to lead to proficiency. Additional training, including coaching and feedback, will be required (Bush, 1984;

Common procedural elements are procedures that consistently accompany use of 
NDBI and should be incorporated throughout implementation of the intervention 
approaches. Those elements are as follows:

approaches. Those elements are as follows:
• NDBI have an intervention manual or manuals that clearly specify the procedures of the intervention.
Research has shown that accurate implementation of an intervention requires 
adherence to clearly stated procedures (Durlak & DuPre, 2008; Fixsen, Naoom, 
Blasé, Friedman, & Wallace, 2005; Greenberg, Domitrovich, Graczyk, & Zins, 
2005). Manualization helps with consistency of implementation and with training of treatment providers (e.g., clinicians, parents). Some manuals for NDBI 
are published and thus readily available to the public, whereas others are 
available primarily in research settings. Of course, clearly described procedures and manualization of intervention are important in ensuring accuracy 
of implementation, but manuals alone are unlikely to lead to proficiency. Addi-

cording to the manual, but it is unknown how effective the intervention might

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Understanding NDBI 
be if it is not accurately applied. Thus, the accuracy of treatment implementation is likely a mediating factor in child outcome, with better outcome likely associated with more accurate treatment implementation (Durlak & DuPre, 2008; 
Gresham, MacMillan, Beebe-Frankenberger, & Bocian, 2000; Stahmer & Gist,

Gresham, MacMillan, Beebe-Frankenberger, & Bocian, 2000; Stahmer & Gist, 
2001). NDBI provide specific assessment procedures and  mastery criteria to 
allow trainers to assess the level of implementation accuracy by practitioners.

allow trainers to assess the level of implementation accuracy by practitioners.
• Ongoing measurement of progress during treatment is an essential feature of 
good treatment and thus a feature of all NDBI.
Effective practice must be systematically and objectively verified through appropriate data collection (Simpson, 2005a, 2005b). Data must be collected to track 
child progress not only to ensure overall treatment effectiveness but also to 
allow for alterations in treatment procedures or treatment targets if necessary. 
Although all NDBI have specified procedures for tracking treatment progress, 
different NDBI emphasize different methods appropriate for their intervention. 
Data collection methods may include trial-by-trial recording of child responses 
to each learning opportunity, interval recording of progress during a treatment 
session, probes of specific behavior, or the use of curriculum-based assessments to examine progress at specific time periods (e.g., monthly, quarterly). 
Data collection is an essential feature of any intervention based on ABA and

should be linked to the child’s treatment goals. If necessary, it should be used 
to alter intervention to better serve the child’s needs.

NDBI share common instructional strategies that comprise the intervention application itself. These strategies are the individual component parts that make up 
the interventions.
• NDBI specify how the environment should be arranged to ensure that the

• NDBI specify how the environment should be arranged to ensure that the 
child must initiate or interact with an adult in order to gain access to desired 
materials, favored activities, or familiar routines.
Environmental arrangement refers to how the adult structures the environment to facilitate and encourage child initiation of skills and learning of new 
target skills. Preferred materials may be visible but placed out of reach to encourage the child to initiate a request for the material (e.g., incidental teaching); 
in other interventions, a variety of toys or activities are placed in a room and the 
child is asked what he or she wants (e.g., PRT). Other types of environmental 
arrangement 1) control access to materials until the child initiates; 2) playfully 
obstruct where the child initiates to continue the activity; 3) introduce materials 
that require assistance so that the child must interact with the adult; 4) create expectant waiting, in which the adult looks at the child and waits for an initiative 
response; or 5) violate a routine, in which the adult changes a familiar sequence 
of events so that the child must correct the sequence. Some NDBI are quite 
specific on methods to structure the environment to promote child initiation, 
whereas others are less specific, dictating that the adult simply must gain the

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interaction with the child can be used extensively in the child’s natural environment. Thus, if the child is playing in a community park where different objects

ment. Thus, if the child is playing in a community park where different objects 
are present, the treatment provider can use NDBI to promote initiation and in-

are present, the treatment provider can use NDBI to promote initiation and interaction, allowing all of the child’s environments to be potentially therapeutic.
• NDBI utilize natural reinforcement and other motivation-enhancing procedures.
NDBI give the child a good deal of control over a teaching episode, and the child’s 
choice of stimuli or activities allows for the use of natural reinforcement as a 
consequence. Reinforcement refers to the strengthening of a behavior and making that behavior more likely to occur, as a result of what happens immediately 
following that behavior. A natural reinforcer is one that is directly related to the 
child’s response. For example, if the child wishes to play with a car, access to the 
car would be contingent on a related response from the child, such as saying 
“car.” This is in contrast to an indirect or unrelated reinforcer, which is not related to the response. The previous example would exhibit an indirect reinforcer 
if the child says “car” and the adult reinforces the child with a piece of candy. 
Candy and saying “car” are not related, whereas saying “car” and gaining access 
to a car are related. A related motivation-enhancing procedure involves the use 
of loose reinforcement contingencies, also referred to as reinforcing attempts
or loose shaping. This strategy involves allowing for more variability around a 
correct response such that the child may receive reinforcement for reasonable 
attempts to respond correctly. Thus, the child receives reinforcement for trying. 
Overall this procedure typically leads to more reinforcement and thus higher

cally require this strategy, whereas others achieve this effect via loose shaping 
by reinforcing a mastered or maintenance task as an attempt. Some NDBI also

attempts to respond correctly. Thus, the child receives reinforcement for trying. 
Overall this procedure typically leads to more reinforcement and thus higher 
motivation. Different NDBI vary in terms of how closely the child’s response 
must be to the target response in order for a reinforcer to be delivered.
Another strategy used to keep the overall reinforcement level, and thus 
the child’s motivation, high is interspersal of maintenance tasks. A maintenance task is a skill the child has already mastered (i.e., an easy task). When 
teaching a new skill, the adult will expect some maintenance (i.e., easier) tasks 
among acquisition (i.e., new, more difficult) tasks. To illustrate, a child is learning to say the phrase “I want the ball” (i.e., acquisition task). It is new, so it may 
be challenging at times. To increase the child’s motivation while decreasing 
frustration, the adult would intersperse trials where the child is asked only 
to label the ball, a skill already mastered (i.e., maintenance task). This practice 
also serves to maintain learned skills through presentation of mastered skills 
while helping the child acquire more advanced skills. Several NDBI specifically require this strategy, whereas others achieve this effect via loose shaping

require the systematic use of adult prompts to promote new skills.

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Understanding NDBI 
• NDBI use balanced turns within teaching routines.
This strategy (also known as turn taking, shared control, or reciprocal interactions) involves back-and-forth exchanges in activities or with objects between 
the child and the adult. Such interactions serve to increase and support the 
social reciprocity found in many typical social interactions. In addition, this 
strategy increases maintenance of social interactions as well as allows the 
adult to control access to materials. Because turn taking involves the back-andforth structure that has been associated with early learning (Harris & Waugh, 
2002), its inclusion in NDBI has intuitive merit. However, despite its inclusion 
in NDBI, its empirical validation as an individual component awaits more research. Not all NDBI emphasize turn taking to the same degree. Some require 
it as a specific, programmed component of their NDBI, and others emphasize

it as a specific, programmed component of their NDBI, and others emphasize 
that turn taking occurs within the context of building longer interactions and

that turn taking occurs within the context of building longer interactions and 
thus is not specifically programmed.
• NDBI use modeling.
In modeling, the adult demonstrates a behavior that follows the child’s focus 
of interest and typically demonstrates the target skill the child should perform. Modeling is often used as a prompt strategy, specifically by the adult 
to evoke and support the child’s imitation of a modeled action or language. 
Across NDBI, modeling is used in various ways. Some NDBI use it primarily 
as a prompt strategy, and others also incorporate it as a general strategy for

as a prompt strategy, and others also incorporate it as a general strategy for 
promoting engagement and enhancing the learning environment outside of 
specific embedded teaching trials.
• NDBI utilize adult imitation of the child’s language, play, or body movements.
This strategy is used to increase the child’s responsivity to, and imitation of, an 
adult, as well as to promote continuation of the interaction. Research indicates 
that children with or without ASD respond with increased attentiveness when 
being systematically imitated by the adult (Dawson & Adams, 1984; Ingersoll 
2010; Ingersoll & Schreibman, 2006). Again, different NDBI place different 
emphasis on reciprocal imitation as a specific component strategy, with some 
models using this strategy to systematically generate a context for embedding

teaching trials (as in reciprocal imitation training) and others using it as a general strategy to enhance engagement and enrich the learning environment.
• NDBI work to broaden the attentional focus of the child.
Early research identified an attentional deficit in many children with ASD, 
wherein a child’s behavior might only be affected by a small portion of a compound stimulus (e.g., Lovaas, Schreibman, Koegel, & Rehm, 1971). This attention phenomenon is called stimulus overselectivity to denote that the level 
of selective attention is excessive. For example, one child whose father wore 
glasses could not identify his father when the father removed the glasses. 
The child used only a very small portion (glasses) of the compound stimulus 
(father, made up of many component features) to identify him. It is easy to see 
how such restricted stimulus control might interfere with learning. More re-

models using this strategy to systematically generate a context for embedding 
teaching trials (as in reciprocal imitation training) and others using it as a gen-

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16 Overview
Schreibman, 2013). In many cases, it can be modified (e.g., Koegel & Schreibman, 
1977), and teaching with multiple examples seems to be key. Because NDBI 
emphasize teaching in natural and varied contexts with a variety of materials, this natural occurrence of multiple examples may likely help broaden, or

als, this natural occurrence of multiple examples may likely help broaden, or 
normalize, the child’s attentional focus (Dawson et al., 2012; Rieth, Stahmer, 
Suhrheinrich, & Schreibman, 2014).

Suhrheinrich, & Schreibman, 2014).
• One of the most critical features of NDBI is that all NDBI involve some form of 
child-initiated teaching episodes.
This strategy may be called child choice or following the child’s lead. It seeks 
to take advantage of increased motivation by presenting something highly desired to a child or providing an instruction or opportunity to respond within 
the context of a child-preferred activity or familiar routine. The child indicates 
interest in an object or activity by speaking, pointing to, reaching for, or spontaneously engaging in the desired activity, and the clinician provides a teaching 
opportunity within the activity. Because the child chooses the object or activity 
involved in the teaching interaction, the child’s successful achievement of his or 
her goal is the positive consequence for the child’s use of the target skill set up 
by the adult. The degree to which the child must initiate a teaching episode varies across NDBI, with some models focusing primarily on child initiations (e.g.,

incidental teaching) and other models balancing child initiations with adultinitiated teaching episodes (e.g., PRT, Project ImPACT).

nosed and the importance of developmental science became apparent when early 
social and other behavioral deficits became the focus of treatment. Thus, the fields 
of behavioral psychology and developmental psychology have joined to inform a 
set of interventions called NDBI.
NDBI are composed of a number of specific interventions that include required 
components and procedures. Thus, the concept of NDBI provides for parsimony of 
distinct intervention models (e.g., PRT, ESDM, JASPER) and allows for a clearer 
appreciation and understanding by families, professionals, insurance carriers, and 
others. It is essential that researchers and clinicians self-identify their particular 
intervention as one of the NDBI. To be identified as such, however, requires that

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Understanding NDBI 
Chapter 2 provides a short overview of NDBI models. Sections II–IV offer 
more specifics of NDBI concepts, requirements, and intervention procedures. This

more specifics of NDBI concepts, requirements, and intervention procedures. This 
book focuses in detail on how NDBI are implemented and evaluated as treatment 
strategies for individuals with ASD and other developmental disabilities.
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