The research reported here has suggested some directions for future research designed to specify those environmental conditions that are most likely to lead to growth in internal control among children. (Author)

Examined the effects of a token economy on off-task behavior occurring concurrently with the reinforcement of target behavior. Results indicated that while the token economy maintained effectiveness in terms of increasing the frequency of target behaviors, the frequency of off-task or inappropriate behaviors also increased as the year progressed.…

Current literature suggests that a teacher's expectancies for a pupil may in part determine the pupil's subsequent behavior. This review asks how such expectancies affect the teacher's own behavior, with the goal of determining what teacher behaviors mediate the observed effect on the pupil. A model of this process is proposed. (Author)

Discusses the role of extrinsic reinforcement in intrinsic motivation in cognitive attribution theory. Concludes that cognitive attribution theory lacks parsimony, in that extant reinforcement analysis can account for undermining with equal facility. Suggests undermining is of little significance due to its elusive and transient impact on operant…

Presents current psychological and educational literature associated with the behavioral characteristics of the mentally retarded adolescent. Discusses empirical constructs including adaptive behavior, motivation, reinforcer effectiveness, locus of control, and social discrimination skills of the mentally retarded. Suggests practical strategies…