The behavior of four adolescents with severe or profound mental retardation was evaluated in the presence of four sets of materials during periods of unstructured leisure activity. Results indicate that the participants allocated their time principally to stereotypic behavior with materials when the number of sets of materials available was…

Serious delinquent behavior may be part of a disabling and durable condition that consists of multiple antisocial and dysfunctional behaviors, often runs in families, and eludes effective short-term treatment. The socializing influence of long-term supportive family treatment is discussed as a therapeutic alternative. (Author/JW)

A study of the relationship between presence or absence of sleep deprivation, allergy symptoms, and the rate and function of problem behavior in three adolescents with moderate to profound mental retardation found that problem behavior was negatively reinforced by escape from instruction, and both allergy symptoms and sleep deprivation influenced…

Two studies involving three adolescents with severe emotional disturbance/behavior disorders and learning difficulties examined effects of problem difficulty and reinforcer quality upon time allocated to two sets of arithmetic problems. Results have implications for understanding the effects of problem difficulty and reinforcer quality on behavior…