Background: Changes in reward processing are thought to be involved in the etiology of attention-deficit/hyperactivity disorder (ADHD), as well as other developmental disorders. In addition, different forms of therapy for ADHD rely on reinforcement principles. As such, improved understanding of reward processing in ADHD could eventually lead to…

Background: Behaviour problems and a preference for adult contact are reported to be prominent in the phenotype of Smith-Magenis syndrome. In this study we examined the relationship between social interactions and self-injurious and aggressive/disruptive behaviour in Smith-Magenis syndrome to explore potential operant reinforcement of problem…

Although previous research indicates that certain types of attention (i.e., statements related to behavior, tickles) may be differentially reinforcing, only one or two forms of attention are typically provided contingent on problem behavior during the attention condition in experimental functional analyses. In the present investigation, various…

A sequence of behaviors consisting of appropriate responses, inappropriate responses, or a combination of both can be linked together in a behavior chain. Several operant processes may disrupt behavior chains. For example, one or more members of the behavior chain may be affected when reinforcement is withheld for the last response in the chain…

Behaviors that are appropriate, inappropriate, or a combination of both can be linked together in a behavior chain. When the contingencies for one response change (e.g., reinforcement is withheld for the last response in the chain; the last response is reinforced even if it occurs without the other responses in the chain) or the environmental…

The phenomena of the induction and entrainment of adjunctive behaviors was investigated in 8 people (ages 5-51) with severe or profound mental retardation who exhibited stereotypic behaviors. Seven of the eight demonstrated evidence of schedule-induced stereotypic behavior, whereas five also showed evidence of the entrainment of these behaviors by…

Subjects were 18 mothers and their clinic-referred children. A stepwise multiple regression analysis indicated that two maternal behaviors, beta commands and total rewards, displayed in the clinic were the best predictors of child compliance in the home. (Author)

A boy with severe mental retardation was unresponsive to his environment and spent 80% of his day body-rocking. Stereotyped body-rocking was greatly reduced via differential reinforcement of incompatible responding (DRI), physical restraint, and reprimand. (JDD)

In this study, 48 third-grade children learned a successive, two-choice discrimination under one of three conditions: (1) immediate reinforcement (IM), (2) 10-second empty delay (ED), and (3) 10-second delay with the discriminative stimuli in view of S (FD). The performances of groups IM and FD were only marginally different, and were both…

Presented children (N=96) aged 8-11 with verbal pain or nonpain stimuli contingent or noncontingent on a target response. Delivered stimuli within an aggressive or nonaggressive setting and with or without affect. Type of setting did not influence the behavior, but stimuli delivered in an affective manner did facilitate responding. (Author/RC)

Assessed the relationship between temporally distant antecedent events (TDEs) and the frequency and function of aggressive and out-of-seat behaviors occurring in school. Results were consistent with previous literature that describes certain antecedent events as establishing operations. Discussion includes how these events interact to alter the…

The role of sensory reinforcement was examined in programing multiple treatment gains in self-stimulation and spontaneous play for four developmentally disabled children (eight to ten years old). (Author/SBH)

The effects of different schedules of noncontingent reward on subsequent learning in children were investigated. In the first phase of the experiment subjects performed a block-design matching task and received one of three schedules of noncontingent reward, i.e., continuous reward (Group CRF), random reward on 50% of the trials (Group 50R), or no…

Two contingency systems, individual and group, were evaluated for their effects on children's behavior during small group meetings. A group of 48 children, ages 8-14, attended a seven-week residential camp program operated on a token economy system. Ratings of the campers' behavior were made by the counselors on a five-point rating scale at the…