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Peer reviewedVolkmar, Fred R.; And Others – Journal of Autism and Developmental Disorders, 1992
Data on 52 individuals with and 62 individuals without autism were analyzed to assess developmental aspects of the DSM-III-R (Diagnostic and Statistical Manual III, Revised) diagnostic system. Findings indicate that DSM-III-R criteria are more developmentally oriented and more behaviorally specific than previous criteria, but the diagnostic…
Descriptors: Autism, Clinical Diagnosis, Developmental Stages, Developmental Tasks
Peer reviewedTsatsanis, Katherine D.; Dartnall, Nancy; Cicchetti, Domenic; Sparrow, Sara S.; Klin, Ami; Volkmar, Fred R. – Journal of Autism and Developmental Disorders, 2003
The concurrent validity of the original and revised versions of the Leiter International Performance Scale was examined with 26 children (ages 4-16) with autism. Although the correlation between the two tests was high (.87), there were significant intra-individual discrepancies present in 10 cases, two of which were both large and clinically…
Descriptors: Adolescents, Autism, Children, Clinical Diagnosis
Peer reviewedVolkmar, Fred R. – Journal of Autism and Developmental Disorders, 1992
This paper presents evidence regarding the validity of the diagnostic concept of "autistic-like" childhood disintegrative disorder, also known as Heller syndrome or as disintegrative psychosis. Its inclusion in the DSM-IV (Diagnostic and Statistical Manual) is supported, and proposed criteria and narrative description are provided.…
Descriptors: Classification, Clinical Diagnosis, Educational Diagnosis, Emotional Disturbances
Peer reviewedVolkmar, Fred R.; And Others – Journal of Autism and Developmental Disorders, 1988
The Autism Behavior Checklist was evaluated with 94 autistic and 63 nonautistic subjects. Although the two groups differed significantly in ratings of pathology both false positive and false negative diagnostic classifications occurred. The test appears to have merit as a screening instrument but should not be used alone to establish a diagnosis…
Descriptors: Adults, Autism, Behavior Patterns, Check Lists
Peer reviewedVolkmar, Fred R.; And Others – Journal of Autism and Developmental Disorders, 1992
This paper compared clinicians' diagnosis and DSM-III (Diagnostic and Statistical Manual), DSM-III-R (Revised), and ICD-10 (International Classification of Diseases) diagnoses of 52 individuals with autism and 62 nonautistic, developmentally disordered individuals. The DSM-III-R system overdiagnosed the presence of autism, and ICD-10 closely…
Descriptors: Autism, Classification, Clinical Diagnosis, Comparative Analysis
Peer reviewedLuteijn, Ellen (E. F. ); Jackson, Sandy (A. E. ); Volkmar, Fred R.; Minderaa, Ruud B. – Journal of Autism and Developmental Disorders, 1998
Describes the development of the Children's Social Behavior Questionnaire (CSBQ), an instrument designed to provide an extensive list of behaviors frequently observed in children with Pervasive Developmental Disorder Not Otherwise Specified. The successful results of the CSBQ in distinguishing the characteristics of this disability are reported.…
Descriptors: Child Behavior, Children, Classification, Disability Identification
Peer reviewedOswald, Donald P.; Volkmar, Fred R. – Journal of Autism and Developmental Disorders, 1991
Autism Behavior Checklists were completed for 52 autistic individuals (ages 2-31) and 62 nonautistic individuals, and data were analyzed using signal detection methodology. A single item (looks "through" people) combined with one of five other items discriminated as well as the sum scores, and further combinations did not improve…
Descriptors: Adults, Autism, Behavior Rating Scales, Check Lists
