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Comprehensive Assessment of Spoken Language, Second Edition (CASL-2)
Availability
Please visit this website for more information about the instrument: Comprehensive Assessment of Spoken Language, Second Edition
Classification
Supplemental: Mitochondrial Disease (Mito)
Short Description of Instrument
CASL-2 is an in-depth evaluation of an individual's oral language skills in children and young adults aged 3 to 21. The battery consists of 14 subtests, that each measure a specific oral language skill. A verbal or non- verbal response is required; however, reading or writing ability is not needed to complete this measure.

 

Measures language knowledge - form and content with four categories:
  1. Lexical/Semantic

  2. Syntactic

  3. Supralinguistic

  4. Pragmatic

 

Measures language performance - systems used to process language with a focus on two systems:
  1. Auditory comprehension

  2. Oral expression

 

Administration time includes 5-10 minutes for each subtest, 30-45 minutes for children aged 3-6 years and 45-60 minutes for individuals aged 7-21 years.
Comments/Special Instructions
Refer to articles on CASL-2 in individuals with Autism Spectrum Disorder.
Scoring and Psychometric Properties
Scoring:
  • Standard scores for index level and subtest level

Indices:
  • General Language Ability Index

  • Receptive Language Index

  • Expressive Language Index

  • Lexical/Semantic Index - receptive vocabulary, antonyms, synonyms, expressive vocabulary, idiomatic language

  • Syntactic Index - sentence expression, grammatical morphemes, sentence comprehension, grammaticality judgment

  • Supralinguistic Index - nonliteral language, meaning from context, inference, double meaning, pragmatic language

 

Psychometric Properties:
  • Normative sample of 2,394 nationally representative children and young adults aged 3 to 21 years, 11 months

  • Clinical sample collected with 271 individuals who had a clinical diagnosis of expressive and/or receptive language disorder, hearing impairment, autism spectrum disorder, social (pragmatic) communication disorder, intellectual disability, learning disability, and developmental delay

  • Strong internal consistency, test-retest reliability and interrater reliability

  • Supportive evidence of validity
Rationale/Justification
Strengths:
  • Alternative scoring guidelines for nonstandard English dialects available

  • Assesses many aspects of spoken language
References
Key References:

Carrow-Woolfolk E. Comprehensive Assessment of Spoken Language, Second Edition (CASL-2) [Manual]. Torrance, CA: Western Psychological Services; 2017.

 

Carrow-Woolfolk E. Comprehensive Assessment of Spoken Language, (CASL) [Manual]. Torrance, CA: Western Psychological Services; 1999.

 

Document last updated March 2024