The CASL is an individually and orally administered, research-based, theory-driven oral language assessment battery. Fifteen tests measure language processing skills--comprehension, expression, and retrieval--in four language structure categories: Lexical/Semantic, Syntactic, Supralinguistic, and Pragmatic. In-depth assessment capabilities provide a precise picture of problems with language processing skills and structural knowledge. Use CASL to record growth from preschool through the secondary years. Age-based norms identify language disorders and impairment as outlined by IDEA. Tests, composites, and indexes have high internal consistency and test-retest reliabilities. Only a verbal or nonverbal (pointing) response is required. Reading or writing ability is not needed to respond to test items.
The CASL battery is ideal for measuring delayed language, oral language disorders, dyslexia, and aphasia. CASL is flexible. Administer only the tests you need for a single subject. For example, an average five-year-old might be given four core tests, plus one or two supplementary tests, if warranted. Core tests measure the most representative aspects of each language category for each of the six age bands. Supplementary tests provide additional diagnostic information to yield assessment data for quantitative (profile) and qualitative (clinical) analyses.