This study compared the effects of unequal and equal reinforcer duration during a functional analysis of aberrant behavior in an 11-year old with moderate mental retardation. Results showed that reinforcer duration affects the rate of aberrant behavior and may potentially alter functional analysis interpretation. (DB)

Analysis of the effects of a short break contingent on completed work with a 10-year-old boy with autism and profound mental retardation found the 20-second break increased responding more than a positive reinforcer did, and the reinforcing effects of a 20-second break were affected by the availability of positive reinforcers during the break. (DB)

This study compared the relative efficacy of providing simultaneous or delayed reinforcement on food acceptance during meals with a seven-year-old boy with pervasive developmental disorder and a history of food selectivity. Although both procedures were effective, the simultaneous reinforcement procedure produced more rapid behavior change and a…

This study compared rates of self-injurious behavior (SIB) exhibited by a 32-year-old woman with profound mental retardation across conditions in which access to restraint was either continuously available, presented as a consequence for SIB, or unavailable. Rates of SIB increased when access to restraint was contingent upon SIB, suggesting that…

Four studies analyzed eye poking behavior of a youth with profound disabilities. Results demonstrated substantive reductions in the frequency of eye poking when goggles were worn and when a video game was provided as a competing source of visual stimulation and as a reinforcer. Music was less effective in reducing eye poking. (Author/DB)

Covert self-injurious behavior in a 21-year old with mild mental retardation and cerebral palsy was treated by first identifying tangible and social reinforcers and then providing reinforcers contingent on absence of tissue damage identified during physical examination. Almost complete success was achieved and maintained over 10 months. (DB)

This study analyzed specific stimuli reinforcing destructive behavior in two 11-year-olds males with mental retardation and severe destructive behavior problems maintained by attention. The use of concurrent schedules of reinforcement identified alternatives to the reinforcing verbal reprimands and led to development of effective treatments to…

Results of a functional analysis indicted that the hand mouthing of a woman with profound mental retardation was maintained by multiple sources of control (sensory stimulation and access to a leisure item). Hand mouthing, though maintained by automatic reinforcement, was also susceptible to social contingencies when exposed to them during…

Peers of a socially rejected seventh-grade girl were rewarded for publicly reporting positive aspects of the girl's behavior. Results indicated that positive peer reports reduced negative social interactions to near zero and increased positive interactions to above 70%. In addition, social acceptance ratings of the girl increased from…