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Allison, Carrie; Baron-Cohen, Simon; Wheelwright, Sally; Charman, Tony; Richler, Jennifer; Pasco, Greg; Brayne, Carol – Journal of Autism and Developmental Disorders, 2008
We report a major revision of the CHecklist for Autism in Toddlers (CHAT). This "quantitative" CHAT (Q-CHAT) contains 25 items, scored on a 5 point scale (0-4). The Q-CHAT was completed by parents of n = 779 unselected toddlers (mean age 21 months) and n = 160 toddlers and preschoolers (mean age 44 months) with an Autism Spectrum…
Descriptors: Control Groups, Check Lists, Autism, Toddlers
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de Bildt, Annelies; Kraijer, Dirk; Sytema, Sjoerd; Minderaa, Ruud – Journal of Autism and Developmental Disorders, 2005
The psychometric properties of the Vineland Adaptive Behavior Scales Survey Form were studied in a total population of children and adolescents with MR, and in the specific levels of functioning (n=826, age 4-18 years). The original division into (sub)domains, as assigned by the authors, was replicated in the total population and in the mild and…
Descriptors: Psychometrics, Measures (Individuals), Children, Adolescents
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de Bildt, Annelies; Sytema, Sjoerd; Ketelaars, Cees; Kraijer, Dirk; Mulder, Erik; Volkmar, Fred; Minderaa, Ruud – Journal of Autism and Developmental Disorders, 2004
The interrelationship between the Autism Diagnostic Interview-Revised (ADI-R), Autism Diagnostic Observation Schedule-Generic (ADOS-G) and clinical classification was studied in 184 children and adolescents with Mental Retardation (MR). The agreement between the ADI-R and ADOS-G was fair, with a substantial difference between younger and older…
Descriptors: Autism, Classification, Children, Adolescents
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Kraijer, Dirk; de Bildt, Annelies – Journal of Autism and Developmental Disorders, 2005
The Scale of Pervasive Developmental Disorder in Mentally Retarded Persons (PDD-MRS) is described. The PDD-MRS is a simple classification and screening instrument devised for identification of autistic disorders (of the entire spectrum) in persons with mental retardation from mild to profound levels, age-range 2-55 years. The norms of the scale…
Descriptors: Pervasive Developmental Disorders, Disability Identification, Mental Retardation, Classification
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Einfeld, Stewart L.; Tonge, Bruce J. – Journal of Autism and Developmental Disorders, 1995
This article describes the development and validation of the Developmental Behavior Checklist for children with emotional and behavior problems along with mental retardation. The article discusses generating and refining the checklist items, results of a principal components analysis, establishing reliability and construct and criterion validity,…
Descriptors: Behavior Development, Behavior Disorders, Behavior Rating Scales, Check Lists
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Lecavalier, Luc; Aman, Michael G.; Hammer, David; Stoica, Wendy; Mathews, Gregory L. – Journal of Autism and Developmental Disorders, 2004
The Nisonger Child Behavior Rating Form (NCBRF) is a behavior rating scale designed for children and adolescents with mental retardation. The purpose of this study was to explore the psychometric properties of the NCBRF in a sample of 330 children and adolescents with autism spectrum disorders (ASDs). Parent and teacher ratings were independently…
Descriptors: Factor Analysis, Construct Validity, Child Behavior, Children