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hecklist for Autism Spectrum Disorder (CASD)

Author: Susan D. Mayes
Purpose: Screen for and diagnose autism
Ages: 1 – 17 years
Format: Printed checklist
Administration: Semi-structured interview with parent
Administration Time: 15 minutes
Qualification Level C 

Qualification Level: C Click For Qualification Level Information

Description
The CASD offers a quick, valid means of screening for, and diagnosing, children with Autism, regardless of age, IQ or Autism severity. It consists of a comprehensive list of 30 symptoms of Autism, scored as present (either currently, or in the past) or absent, based on a semi-structured interview with the parent; information from the child’s teacher or child care provider; observations of the child, and other available records. The standardization sample included more than 1,000 children with Autism (1-17 years of age, IQs of 9-146), over 500 typical children, and children with other diagnostic groups (e.g., ADHD). All children in the Autism group had a total CASD score at, or above, the Autism cutoff of 15, which is the cutoff for both high- and low-functioning Autism. Scores of 10-14 are in the Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS) range.

CASD Features and Benefits

  • Incorporates multi-source data from parents, teachers, observations, and records.
  • Includes 30 autism symptoms consistent with DSM-5 criteria.
  • Accurately differentiates between autism and ADHD.
  • Appropriate for toddlers through adolescence.
  • Provides information for diagnostic reports and treatment plans.
  • Clinically practical and cost-effective.
  • Useful for screening and diagnosis.
  • No extensive training required.
  • Appropriate for toddlers through adolescence.
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