ASL CDI

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The ASL-CDI 2.0 is an updated American Sign Language adaptation of the MacArthur Bates Communicative Development Inventory. It is an assessment of early vocabulary knowledge in children learning American Sign Language.

Features

Short Form

The short form gives a rough sense of the child's vocabulary size, and how this compares to other children. The short form is relatively easy for parents to complete.

Long Form

The long form gives a more detailed picture of the child's vocabulary. It provides information about not only how many signs the child knows, but which kinds of signs the child knows and is still learning.

Part II

For children younger than 36 months old, and may not know very many signs, we also ask a series of questions about the child's communicative play. If the child is in this age range, we will automatically ask the Part II questions.

Learn More

Full details on how the assessment was normed and developed.

See this guide on how to get started for parents and practitioners.