This study assessed the validity of idiosyncratic choice-making behaviors of three children with multiple disabilities. Children were given either their "choice" of food or drink or were given the opposite. Direct observations of children's acceptance or refusal revealed the children consistently indicated choices during both conditions.…

Four experiments with six students with multiple profound disabilities examined the function of behavioral stereotypies and sensory modalities maintaining them. Findings are discussed in terms of the sensory and social reinforcers that maintain stereotypy, assessment procedures used to identify reinforcers, and the interpretation of assessment…

WISC (Wechsler Intelligence Scale for Children) and WRAT (Wide Range Achievement Test) data from the first sample of 60 children with uncomplicated meningomyelocele (a neurological condition) were examined to determine their deviation from test norms. A second sample of 46 children was tested with the WISC-R, WRAT, VMI (Visual Motor Integration)…

Four boys (ages 5 to 12) with developmental disabilities and severe challenging behaviors were evaluated using two functional assessment procedures: different analog probe conditions, and direct classroom observation of the child's behavior, antecedents, and consequences. Results raised questions about the reliability and ecological validity of…

The representativeness of behavioral observation samples with durations of less than the whole time of interest was investigated with five profoundly mentally retarded physically handicapped adults in an institutional setting. It was found that the session representativeness was a function of the relative duration of the behavioral categories and…