15 TILLS subtests FINAL
The 15 Subtests of
A better way to assess language and literacy skills
Vocabulary Awareness
Function: To assess a student’s lexical knowledge, awareness of semantic relationships, and cognitive-linguistic flexibility.
Task: The student must be able to first identify a pair of semantically related words from a triplet of three words, and then switch sets to identify a second semantic pairing.
Sample Items:
| light-sun-feather | light-sun-feather |
|---|---|
| sun gives light | feather is light |
Phonemic Awareness
Function: To assess a student’s awareness of the individual speech sounds of language (phonemes).
Task: The student must isolate single sounds within real words or nonsense words and manipulate them by removing them from the initial position of words.
Sample Item:
| Item | Phonetic spelling | Spoken response |
|---|---|---|
| bip→ip | /bIp/→/Ip/ |
Story Retelling
Function: To assess a student’s ability to listen to, comprehend, and retell a story.
Task: The student will listen carefully as the administrator reads an age-appropriate story. The student’s job is to tell the story back to the administrator in the same way.
Sample Item:
| Item | Target spoken response |
|---|---|
| bup | /b^p/ |
Nonword Repetition
Function: To assess a student’s speech perception, the ability to hold a sequence of speech sounds in memory, and the ability to reproduce those speech sound (phonological) sequences accurately.