Many students struggle with statistical concepts such as interaction. In an experimental group, participants took a paper-and-pencil test and then were given training to establish equivalent classes containing four different statistical interactions. All participants formed the equivalence classes and showed maintenance when probes contained novel…

The study sought to identify some of the variables controlling the severely aggressive behavior of two severely retarded children (ages 9 and 14). Experiments conducted under various conditions showed that, while aggressive behaviors sometimes serve as an escape function, the behaviors can be terminated through reduction of the causative situation…

This study, with an 11-year-old male with severe mental retardation, investigated the effectiveness of selectively implementing punishment for only the most severe topographies of aggression and property destruction, whereas less extreme behaviors were ignored. Results indicated that severe behaviors were reduced to near-zero levels only when both…

This paper summarizes brief functional assessments of 79 cases of people with developmental disabilities and self-injurious, aggressive, stereotypic, or other aberrant behavior. Outcomes were evaluated across three variables: (1) referring topography, (2) control over behavior, and (3) the identified maintaining conditions for aberrant behavior.…

This study evaluated self-control and impulsivity in two nine-year- old males with severe developmental disabilities and behavior disorders. Functional analyses suggested that aggression was reinforced by food access. A differential reinforcement procedure to reinforce appropriate mands was implemented. Although aggression occurred when it…