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Direct linkAndersen, Lisa M. J.; Naswall, Katharina; Manouilenko, Irina; Nylander, Lena; Edgar, Johan; Ritvo, Riva Ariella; Ritvo, Edward; Bejerot, Susanne – Journal of Autism and Developmental Disorders, 2011
There is a paucity of diagnostic instruments for adults with autism spectrum disorder (ASD). This study evaluates the psychometric properties of the Swedish version of the Ritvo Autism and Asperger Diagnostic Scale-Revised (RAADS-R), an 80-item self-rating scale designed to assist clinicians diagnosing ASD in adults. It was administered to 75…
Descriptors: Autism, Asperger Syndrome, Test Reliability, Rating Scales
Ingram, David G.; Takahashi, T. Nicole; Miles, Judith H. – Journal of Autism and Developmental Disorders, 2008
The purpose of the present study was to determine which behavioral and physical phenotypes would be most likely to divide the ASD population into discrete subgroups. The taxometric methods of Maximum Covariance (MAXCOV) and Minus Mean Below A Cut (MAMBAC) were employed to test for categorical versus continuous variation of each phenotype across…
Descriptors: Autism, Perceptual Motor Learning, Interpersonal Relationship, Interaction
Richler, Jennifer; Bishop, Somer L.; Kleinke, Jennifer R.; Lord, Catherine – Journal of Autism and Developmental Disorders, 2007
Restricted and repetitive behaviors (RRBs) on the Autism Diagnostic Interview- Revised (ADI-R: Lord, Rutter, & Le Couteur (1994) were examined in 165 children with Autism Spectrum Disorders (ASD), 49 children with non-spectrum developmental disorders (DD), and 65 children with typical development (TD) at approximately 2 years of age. A factor…
Descriptors: Factor Analysis, Autism, Antisocial Behavior, Developmental Disabilities
