The purpose of the present laboratory study was to investigate the relative effects of sharing and nonsharing peer and adult models on the facilitation of prosocial behaviors with and without reinforcement to the model. One hundred and sixty second and third grade children served as subjects and were randomly assigned to six treatment groups and one control group. For replication purposes, half of the subjects participated in each condition prior to the second half doing so. Children in the treatment groups viewed videotaped sequences portraying both a male and female model sharing or not sharing tokens with poor children. Models were either peers or adults. Sharing was either reinforced by praise from an adult or not reinforced; nonsharing was not reinforced. Children in the control group viewed an entertainment program devoid of prosocial or antisocial content. All children received instructions with respect to the acquisition and distribution of tokens which were exchangeable for prizes at the end of the session. Prosocial behaviors were· assessed following the videotaped sequences and included token donations, volunteering of work, and offering help following a staged accident. Children viewing nonsharing and nonreinforced peers had lower token donations than children in other treatment groups and the control group. Although not statistically significant findings, children who viewed peer models exhibiting prosocial behaviors that were reinforced had greater token donations and tended to help in the staged accident more than children in other treatment groups. No differences were found between treatment groups with respect to volunteering work. More children provided help in a staged accident when they had observed sharing peers who were reinforced than children in other conditions. However when children observed nonsharing and nonreinforced adults, they displayed a lower incidence of helping. Vicarious reinforcement produced greater, though not statistically significant, token donations as compared with the absence of reinforcement in both adult and peer treatment conditions. The correlations among donations, volunteering, and helping were found to be low. Modeling in combination with reinforcement of the model was not sufficient to increase prosocial behaviors significantly beyond the performance of a control group. The contribution of peer modeling to the facilitation of prosocial behaviors in the early elementary grades appears slight. Nevertheless, peer models were especially influential in inhibiting prosocial behaviors by the modeling of antisocial responses. The observation of reinforcement contingencies applied to models only slightly increased prosocial behaviors and can not be considered a potent variable in this behavior domain.

Research on vicarious reinforcement has answered many questions but whether vicarious reinforcement increases the likelihood that an observer will imitate a model, a social learning theory would predict, or sets the occasion for the observer to perform an alternate response, as a discriminative stimulus interpretation of vicarious reinforcement suggests, seems to depend on (1) the setting, (2) procedure, and (3) reinforcers used. In an effort to better understand the function of vicarious reinforcement, while controlling for subjects; histories and using tangible reinforcers, 47 preschool children participated in two experiments that (1) provided an experimental history of responding on several levers, (2) provided differential reinforcement on the levers during training, and (3) assessed the effects of observing a model respond on a lever and receive tokens. In Experiment I, 18 subjects who were trained to respond on three levers responded during an extinction period and then observed either an adult model respond on a fourth, novel lever or observed a control procedure. Only subjects who observed the model receive tokens responded on the same lever as the model during an additional extinction period. The extinction period was procedurally defined and relatively short in duration. The results of Experiment I supported social learning theory; however, imitation effects were short lived. Another experiment was conducted to evaluate more fully the extinction of the modeled behavior found in Experiment I. In Experiment II, 29 subjects who were trained to respond on three levers responded during an extinction period and then observed an adult model in one of four modeling conditions. The subjects in this experiment were exposed to the model lever during training and had an extensive history of never being reinforced on the modeled lever. Only some of the subjects who observed the model receive tokens responded on the model lever and only for a short period of time. The results of this experiment illustrated the importance of the reinforcement history of the observer and supported previous studied which found an extinction effect for vicarious reinforcement. Taken together, these experiments illustrate the limits of social learning theory because imitation effects were short lived and suggest certain procedures that will enhance the use of vicarious reinforcement in applied setting.

Research has shown that video modelling can improve social behaviours in children with ASD. In addition, research in behaviour modelling training from the field of organisational psychology has shown that using a mix of positive and negative exemplars can assist in acquisition and generalisation of a skill. The current study compared the use of one negative and one positive exemplar, with the use of two positive exemplars to determine which combination would result in faster acquisition and/or superior generalisation of a skill. No other studies have examined this with children diagnosed with ASD. Seven children, aged between 5 and 15 years, and diagnosed with ASD participated in a multiple baseline design across children; within child across two modelling conditions; and within each modelling condition across two tasks. In one condition, a participant watched a video containing one exemplar of a model (same sex and of similar age but with normal development) perform a task the wrong way, and one exemplar of the same model perform the same task the right way (wrong/right). In another condition, the participant watched a video containing two different exemplars of the model perform a matched task the right way (right/right). During the intervention, 1 participant refused to watch the videos. For 13 of the 16 tasks, where training was completed, participants either reached criterion or made some gains in acquisition of the social skills. However, for seven of the tasks criterion was not reached. Generally, neither modelling condition was superior in acquisition or generalisation of the targeted social skills. Confounds occurring during the course of the study may have contributed to the equivocal results. For some children with ASD, video modelling in combination with the delivery of preferred reinforcers may be required for successful skill acquisition. Further implications, particularly the potential negative effects of vicarious reinforcement when an observer does not gain reinforcement for imitation are discussed, as are recommendations for future research.