Available information is reviewed on defining features and diagnostic issues related to autism and related developmental disorders. Controversies over both the boundaries and the heterogeneity within the autism syndrome are evaluated. Diagnostic rating instruments for expediting systematic sample selection are critiqued. (Author/DB)

Clinicians need to know the likelihood of a condition given a positive or negative diagnostic test. In this study a Bayesian analysis of the Clinical Behavior Checklist for Persons with Intellectual Disabilities (CBCPID) to predict depression in people with intellectual disability was conducted. The CBCPID was administered to 92 adults with…

Individuals with developmental disability (n=400) were assessed with the "Dyskinesia Identification System: Condensed User Scale" (DISCUS), a 15-item tardive dyskinesia rating scale shortened from the "Dyskinesia Identification System-Coldwater." Based on interrater reliability, 2-week stability, and other analyses, DISCUS is…

This study compared 23 children with high-functioning autism with 12 children with Asperger syndrome using DSM-IV diagnostic criteria. Findings indicated few group differences in current functioning but many early history differences. The Asperger syndrome group generally demonstrated less severe early symptoms, a milder developmental course, and…

Fifty children and adolescents with affective disorders and mental retardation admitted to a psychiatric inpatient unit were compared with 50 inpatients without depression. Behavioral symptoms occurred significantly more often in the affective group than in the comparison group. The behavioral presentation of affective symptoms in children and…