Analyses of the internal consistency of three autism scales--the Autism Behavior Checklist (ABC), the Real Life Rating Scale (RLRS), and the Childhood Autism Rating Scale (CARS)--were conducted with 34 children with pervasive developmental disabilities. Good internal consistency was found for the CARS. Adequate full-scale consistency was found for…

A Japanese translation of the Childhood Autism Rating Scale was used with 167 developmentally disabled children under age 16. Total score demonstrated a satisfactory level of taxonomic validity and discriminated infantile autism and other pervasive developmental disorders from mental retardation alone. A satisfactory concurrent validity on the…

Factor analysis of the Childhood Autism Rating Scale found three factors: (1) social impairment, (2) negative emotionality, and (3) distorted sensory response. Subjects with autism were distinguished from subjects with either pervasive or nonpervasive developmental disorders by higher scores on social impairment. Negative emotionality was most…

This study, involving 24 children or adolescents with pervasive developmental disorders, assessed 3 autism scales: Autism Behavior Checklist, Real Life Rating Scale, and Childhood Autism Rating Scale. The study analyzed interrater reliability, correlations between pairs of the three scales, diagnostic classification cutoff scores, and…