Individuals with Prader-Willi syndrome (PWS) are at risk for excessive daytime sleepiness (EDS) and disruptive behavior. This pilot study explores temporal characteristics of EDS and severe disruptive behavior across time of day and day of week in seven individuals with PWS (aged between 33 and 49 years) of whom five were matched to controls.…

This review critically examines the research findings which characterize the cognitive, behavioral, and neuroanatomical features of Williams syndrome (WS). This article analyzes 178 published studies in the WS literature covering the following areas: 1) General intelligence, 2) Language skills, 3) Visuospatial and face processing skills, 4)…

Harassment and bullying among 186 students with intellectual disabilities, ages 12 to 21 years, in special education schools were examined. The differences between bullies and victims in terms of social adjustment and social skills were investigated. No prototypes characterizing differences in social skills were found between the three subgroups:…

The Devereux Adolescent Behavior Rating Scale was used to investigate the effects of age and sex on the classroom behavior of 294 educationally handicapped adolescents. An analysis of variance (ANOVA) indicated that the five age groups (12, 13, 14, 15, 16 years) were significantly different on one behavioral scale (heterosexual interest). Analysis…

This study examined the effectiveness of the Behavior Summarized Evaluation to discriminate 58 autistic from 58 nonautistic mentally retarded children. The measure clearly separated the two samples with between-group differences highest on four items indicating the most particular pattern in autistic children was the association of autistic…

Examination of staff responses to problem behaviors in three community-based group homes found that staff tended to rely heavily on verbal approaches to address problem behavior of people with intellectual disability, using other strategies only when the initial response failed. Findings suggest that staff behavior is negatively reinforced by the…

This observational study analyzed effects of instructional variables on the engaged behavior of 29 students with moderate, severe, or profound intellectual disabilities who were included full-time in general elementary classrooms. Results indicated that one-to-one, small group, and independent work arrangements were associated with higher engaged…