This paper presents tables for converting raw scores on the Bayley Scales of Infant Development to Mental Development Index and Psychomotor Development Index values. The tables were developed to generate index values for young children with developmental delays, based on recent revision of the scales and standardization procedures. Methodology is…

A study attempted to replicate a previous study that presented reliability data from recordings of behavior state using a 13-category coding system. Replication was unsuccessful. Obtained mean percentage agreement on occurrence for individual behavior state and participants (n=34) ranged across observer pairs from 0 to 58 percent. (Contains 13…

Adaptive behavior ratings of children with mental retardation by either parents (N=22) or teachers (N=22) were compared using the Adaptive Behavior Scale--School Edition. Findings indicated no significant differences in parents' and teachers' ratings in the categories assessed or in the importance ascribed to the behaviors evaluated. (Author/DB)

Test-retest reliability, internal consistency, and validity of the Vocational Assessment and Curriculum Guide with mentally retarded and nonretarded subjects having different employment characteristics was investigated. Empirical validation results suggested that domain scores differentiated between retarded subjects with only sheltered work…

The factor validity of the new Aberrant Behavior Checklist-Community (ABC-C) was determined with 1,040 adults, ages 18-89, who were mentally retarded and living in group homes. The original ABC factor structure appeared valid for scoring the ABC-C with this population. Variables studied included age, gender, level of mental retardation,…

Thirty-seven adults with mental retardation and 46 other people from the community participated in videotaped role plays involving 3 social skills (following instructions, accepting criticism, and negotiating to resolve conflicts). There were high positive correlations between the behavioral checklist scores and the evaluations of community…

The limitations of informant assessment of problem behaviors was investigated across seven situations and three participants (ages 11-18) with cognitive impairments. Informant hypotheses about the function of problem behaviors were validated by subsequent functional analyses only when informants identified their hypotheses as involving situations…

A study used the Vineland Adaptive Behavior Scales to investigate patterns of adaptive behavior in 30 children with autism who were under 3 years. Relative to controls, participants demonstrated weaker socialization and communication skills and greater discrepancies between adaptive behavior and mental age. The utility of the scales is discussed.…

Relations among instruments used in community mental-health services for people with developmental disabilities were explored with 284 individuals. Correlation coefficients were evaluated for statistical significance and effect size for subtests of the Reiss Screen for Maladaptive Behavior, the Aberrant Behavior Checklist, and the Adaptive…

Development of the Stereotyped Behavior Scale for adolescents and adults with mental retardation is described. Use with 600 individuals resulted in refinement and a 26-item scale with an internal consistency alpha of 0.88, test-retest reliability of p=0.90, and interrater reliability of p=0.76. (DB)

A study of 41 preschool males with fragile X and 16 age- and IQ-matched controls were rated by their mothers on behavior rating scales. The males with fragile X syndrome were distinguished from controls in the following areas: motor skills deficits, increased initial avoidance, decreased social withdrawal, and positive mood. (Contains references.)…

Cluster analysis was performed on the adaptive behavior scores of 2 samples of 200 institutionalized mentally retarded individuals. Three clusters were found to be stable across clustering methods, subject samples, and time points 3 years apart. Cluster membership was meaningfully associated with demographic characteristics and neurological and…

Mothers of 23 infants with disabilities predicted their child's performance on developmental measures with accuracy levels comparable to those of parents of preschool children without disabilities. Mothers were more accurate in predicting motor performance than cognitive performance. There was a negative relationship between initial maternal…

Four papers offer comments on A. Silverstein's paper on cluster analysis of institutionalized mentally retarded individuals, and Silverstein responds to the commentaries. The commentaries examine the soundness of study goals, usefulness of an adaptive behavior classification system, and feasibility of utilizing adaptive behavior measures to…

Twenty-six adolescents with educable mental retardation were identified as good or poor attenders based on teachers' ratings on an attention scale and were administered an auditory vigilance test and Posner's physical and name identity task. Although the vigilance task did not discriminate between groups, the more demanding Posner's task did.…