We conducted three experiments to reproduce and extend Perone and Courtney's (1992) study of pausing at the beginning of fixed-ratio schedules. In a multiple schedule with unequal amounts of food across two components, they found that pigeons paused longest in the component associated with the smaller amount of food (the lean component), but only…

Stereotypical behavior maintained by automatic reinforcement often does not result in harm but may be undesirable in some situations. In the current investigation, participants were 2 individuals who engaged in nonharmful stereotypical responses shown in an analogue functional analysis to be insensitive to social contingencies. After bringing…

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…

Decision-making is an important function that can be quantified using a two-choice prediction task. Individuals with Autistic Disorder (AD) often show highly restricted and repetitive behavior that may interfere with adaptive decision-making. We assessed whether AD adults showed repetitive behavior on the choice task that was unaffected by…

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…

Compared the reinforcement expectancies of adult alcoholics with beliefs of men and women in alcohol treatment programs, hospitalized medical patients, and college students through the Alcohol Expectancy Questionnaire (AEQ). Results indicated the previously defined AEQ beliefs apply to the alcoholic population and these populations significantly…

Affective and physiological responses, interpersonal interaction, and alcohol consumption have been significantly correlated with cognitive factors in defining the behavioral effects of alcohol. To investigate alcohol reinforcement expectancies at the abusive end of the drinking continuum, 305 male and female adult alcoholics enrolled in alcohol…

Experiments examined the effect of work requirements in combination with reinforcement schedules on the choice behavior of six adults with mental retardation and seven typical preschoolers. Results showed that participants' responding was largely controlled by the reinforcement received for responding to each level of work. (Author/CR)

Intrinsic motivation and self-reinforcement can be used identically to explain behavioral persistence in the absence of external reward. Yet the relationship between these concepts has not been adequately explored. Since intrinsic motivation appears to be dependent on an interesting task and self-reinforcement independent of task, it was…

This study examined three maladaptive behaviors, self-injurious behavior (SIB), stereotypies, and aggression in 36 adults with either autism, pervasive developmental disorder not otherwise specified (PDD-NOS), and mental retardation. Findings indicated that, for all three diagnostic categories, aggression was primarily maintained for attentional…

Three peer caregivers with moderate mental retardation worked to improve the occupation level of a passive man with profound mental retardation. The peer caregivers carried out meaningful activities with the trainee for 15-minute periods. The trainee received social reinforcement; the caregivers received tangible reinforcement. Use of multiple…

A study to produce a reliable, methodological precise measure of generalized locus of control of reinforcement, which can be group administered to a wide range of children, is reported. The measure produced, the Nowicki-Strickland Locus of Control Scale, is a paper and pencil instrument of 40 questions which are marked either yes or no. The scale…

Reviews literature on effects of being imitated and the social influence function of imitation, plus related literature on conformity from social psychology. Considers this research within a number of theoretical contexts, especially within the conceptual framework of effectance motivation. Suggests imitation may facilitate mastery and control of…