Abstract
Reliability and validity of three commonly used autism scales, the Autism Behavior Checklist (Krug, Arick, & Almond, 1980), the Real Life Rating Scale (Freeman, Ritvo, Yokota, & Ritvo, 1986), and the Childhood Autism Rating Scale (Schopler, Reichler, & Renner, 1988), were investigated. Data analyses were based on completed protocols for 24 children or adolescents who met DSM-III-R criteria for pervasive developmental disorders. First, to replicate previous findings, interrater reliability of each of the two direct observational scales was assessed. Second, correlations between pairs of the three scales were calculated. Third, diagnostic classifications based on autism scale cutoff scores were compared to classifications based on DSM-III-R criteria. Fourth, relationships between autism scale scores and adaptive behavior scores were investigated. Results and implications for the use of these scales in the assessment of autistic behaviors are discussed.
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Special thanks to John Junginger for his help and support throughout this project.
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Sevin, J.A., Matson, J.L., Coe, D.A. et al. A comparison and evaluation of three commonly used autism scales. J Autism Dev Disord 21, 417–432 (1991). https://doi.org/10.1007/BF02206868
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DOI: https://doi.org/10.1007/BF02206868