Sensitivity theory divides the causes of challenging behavior into three categories, aberrant contingencies, aberrant environments, and aberrant motivation. This paper replies to criticism that sensitivity theory is circular and unsupported by empirical evidence by reporting on studies that support the theory and rejecting the idea that…

The study of 20 adult stutterers participating in a 32-hour program of fluency training found that results were consistent with the hypothesis that improvements in fluency during response-contingent stimulation may occur when stutterers access extant fluent speech that is not otherwise being fully utilized. (Author/DB)

This study evaluated the effectiveness of high probability requests and time-out as treatments for noncompliance which appeared to be maintained by contingent attention in two developmentally normal children. The introduction of high-probability requests increased compliance for one child but not the other. Time-out was effective with both…

Twenty children with autism received either an imitative or contingently responsive interaction with an adult. The contingency condition appeared to be the more effective way to facilitate a distal social behavior (attention), whereas the imitative condition was a more effective way to facilitate a proximal social behavior (touching). (Contains…

The effects of two levels of exercise (walking versus jogging) in suppressing the self-stimulatory behavior during academic programming of a 5-year-old boy with autism were examined. Decreased physical self-stimulation and "out of seat" behavior were found only for the jogging condition. Sharp reductions in these behaviors did not return…

Functional assessment is redefining the standards for clinical interventions with problem behavior and reemphasizing the importance of basic behavioral mechanisms. It has shown the importance of complex patterns of behavioral control, functional assessment as an ongoing process, and the importance of attention to antecedent variables. Future…

After finding that self-injurious behavior in two young males with developmental disabilities was negatively reinforced by escape from instructional activities, an intervention provided noncontingent escape on a fixed schedule and differential negative reinforcement of other behavior. Provision of escape, even when noncontingent, resulted in…

Evaluation of reductive treatment versus instructional treatments on the generalized reduction of problem behaviors in two adolescents with severe intellectual disabilities indicated that when only one member of a response class was blocked, a collateral increase in other problem behaviors was observed, but learning an alternative positive…

A review of the January 1993 issue of the "Journal of the Experimental Analysis of Behavior" concludes that behavioral interventions produce collateral effects, but predicting those effects in applied work is complicated because of verbal and instructional influences and because of interactions among reinforcer types. (JDD)

This study evaluated use of the interpolation of reinforcement effect, which combines intermittent (INT) and continuous reinforcement (CRF) schedules, with four young children with autism using a free-operant preparation. Results suggest that responding may be less resistant to extinction following interpolated CRF reinforcement than following INT…

Sensitivity to reinforcement contingencies was examined in six individuals with mental retardation using a concurrent operants procedure in the context of a computer game. Results included individual differences in sensitivity and differential sensitivity to rate and magnitude variation. Results suggest that comprehensive assessments of potential…

Three studies investigated environmental correlates of self-injurious behavior in seven developmentally disabled children and adolescents which were then later used for treatment. Correlates investigated included positive reinforcement, negative reinforcement, automatic reinforcement, and control. "Escape extinction" was successfully…

The study evaluated the effects of a time-efficient reinforcer assessment package with three preschoolers with autism. Systematic assessment of children's reinforcers for correct responding virtually eliminated nontargeted maladaptive behaviors, and yielded expected improvements in accuracy. (Author/DB)

The self-injurious behaviors of nine subjects with developmental disabilities were observed in settings in which play materials, experimenter demands, or social attention were systematically varied. Although there was much between-subject and within-subject variability, higher levels of self-injury were consistently associated with a specific…

Seven parents conducted assessments in an outpatient clinic using a prescribed hierarchy of antecedent and consequence treatment components for their children's problem behavior. Brief assessment of potential treatment components identified variables controlling children's appropriate behavior. Experimental control was achieved for six of the…