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Direct linkEaves, Ronald C.; Williams, Thomas O., Jr. – Psychology in the Schools, 2006
The reliability and construct validity of ratings for the Autism Behavior Checklist were examined with a sample of 198 children diagnosed with autistic disorder and conditions often confused with autism. Alpha coefficients for the five scales of the ABC as well as the Total Score were reported and the factor structure of the ABC was examined…
Descriptors: Check Lists, Test Reliability, Test Validity, Factor Analysis
Williams, Thomas O., Jr.; Eaves, Ronald C. – Psychology in the Schools, 2005
The Pervasive Developmental Disorders Rating Scale (PDDRS; Eaves, 2003) is a rating scale that is used in the screening process for pervasive developmental disorders (PDD). The PDDRS contains three scales: Arousal, Affect, and Cognition. In this study, the construct validity of the PDDRS was examined with teacher ratings from a sample of 168…
Descriptors: Test Validity, Rating Scales, Pervasive Developmental Disorders, Factor Analysis
