Structure of adaptive behavior in samples with and without mental retardation.

The structure of adaptive behavior as a function of age and status of handicap was investigated in two samples with mental retardation and five samples without retardation. Exploratory factor analysis of the subscale scores from a comprehensive, nationally standardized measure of adaptive behavior (Scales of Independent Behavior) revealed a large Adaptive or Personal Independence dimension. Although not consistently identified in all samples, secondary Academic, Personal Responsibility, and Community/Vocational dimensions were also identified. Possible differences were identified in the structure of adaptive behavior as a function of age.