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A Test for the Differences between Two Groups' T-Distributed Statistics.
Peer reviewed Peer reviewed
Willson, Victor L. – Psychology in the Schools, 1983
Reviews a recent paper by Levy (1982) which concluded that a new format of the Peabody Picture Vocabulary Test was valid for autistic children. Claims the analysis was inappropriate and presents a statistical test to compare differences between independent mean differences. Includes a reply by Stine Levy. (Author/JAC)
Descriptors: Autism, Children, Comparative Analysis, Correlation
Use of the Peabody Picture Vocabulary Test with Low-Functioning Autistic Children.
Peer reviewed Peer reviewed
Levy, Stine – Psychology in the Schools, 1982
Adapted the Peabody Picture Vocabulary Test to facilitate administration to low-functioning autistic children who do not have a pointing response. Autistic (N=10) and preschool-aged children (N=20) were given the standard form and the adapted form. Results supported the use of the published norms for the adapted version. (Author/RC)
Descriptors: Autism, Intelligence Tests, Test Bias, Test Construction
Comparisons of the Peabody Picture Vocabulary Test and the McCarthy Scales of Children's Abilities with a Sample of Autistic Children.
Peer reviewed Peer reviewed
Ferrari, Michael – Psychology in the Schools, 1980
The Peabody correlated significantly with the McCarthy General Cognitive Index, Verbal Scale, Perceptual Scale, and Memory Scale. A significant difference between the means of the two tests was found, with the Peabody yielding lower scores. (Author)
Descriptors: Autism, Children, Cognitive Measurement, Comparative Testing
The Reliability and Construct Validity of Ratings for the Autism Behavior Checklist
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Eaves, 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
Factor Analysis of the Pervasive Developmental Disorders Rating Scale with Teacher Ratings of Students with Autistic Disorder
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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