The study evaluated a reinforcement theory of stereotyped behavior with six autistic students (ages 9-16). Three students evidenced decreases in stereotypy and increases in responding in the presence of usual reinforcers, while the other three students required external suppression of stereotypy before increases in responding were shown.…

Two experiments examined the reinforcing value of response contingent sensory events consisting of combinations of visual, auditory, and vibratory stimulation with 10 nonambulatory profoundly mentally retarded individuals. Results indicated that systematically varying a multimodal sensory event is an effective way to identify positive reinforcers…

Examines whether therapist contact reinforces weight loss behaviors. Overweight clients (N=45) were assigned to conditions in which therapist contact was or was not contingent on weight loss. Weight loss was not affected by contingency, but clients who were seen contingent on not losing weight had the poorest results overall. (JAC)

In a study of visual discrimination tasks with three autistic children (ages five-six), multiple sensory reinforcers maintained responding over more trials than did multiple edible reinforcers. Single sensory reinforcers and single edibles however, resulted in nearly equal numbers of trials to satiation. Sensory reinforcers produced higher…

Two experiments involving six profoundly retarded Ss (3-18 years old) evaluated a formal method for identifying reinforcers. Results revealed that preferred stimulus conditions typically produced higher rates of responding than did either baseline or nonpreferred stimulus conditions, suggesting that the procedure can assess reinforcer value for Ss…

A group outcome study evaluated the effectiveness of four treatment procedures in reducing self-injurious behavior among 22 severely handicapped students (mean age 10.5 years). Contingent restraint was most effective in reducing behavior below baseline levels. (Author/CL)

Investigated were the effects of differential reinforcement of other behavior (DRO) and response cost (RC) on the attending behavior of a learning disabled (LD) 7-year-old and a behavior disordered 10-year-old. The differential effects of the DRO contingency in the two case studies were attributed to differences in the reinforcement schedules.…

A token reinforcement program at a residential center operates on a point card system which measures daily work quality and attitude, academic involvement, self-maintenance, peer and adult interactions, and self-control in behavior disordered children. Issues in the program's administration, including unresponsiveness and use of daily feedback,…

Discusses considerations that should be made when one chooses an intervention based on aspects of the student, the situation, and the intervention itself. Considers manipulation that involves reinforcing events and nonpreferred events. (RJC)

Proposes a minimal set of principles based on short-term and long-term memory mechanisms that can explain the major static and dynamic properties of operant behavior in both single-choice and multiresponse situations. The model predicts the major qualitative features of operant phenomena and suggests an experimental test of theoretical predictions…

Analyzes historical and contemporary theories of reinforcement and clinical application of reinforcement principles to behavior and modification therapy. Presents a behavioral momentum model that studies the allocation of behavior under changed environmental constraints and discusses the implications of this model on behavior modification and…

Although reinforcement often leads to repetitive, even stereotyped responding, that is not a necessary outcome. When it depends on variations, reinforcement results in responding that is diverse, novel, indeed unpredictable, with distributions sometimes approaching those of a random process. This article reviews evidence for the powerful and…

This rejoinder discusses some common points raised in the commentaries of this special issue of JOBM, including (1) different definitions of positive and negative, (2) use of the terms reinforcement and establishing operation, and (3) concerns over the abandonment of behavior analysis for mentalistic research. In addition, a people-based approach…

Effects of a Lag 1 reinforcement schedule on appropriate and varied responding to the social question, "What do you like to do?" and effects of the proportion of preferred stimuli present during training on the amount of varied responding in each session were investigated with students with autism. An ABAB reversal design and a multielement design…