Some effects of discriminative training with equated frequency of reinforcement

Pigeons were exposed to a multiple schedule which provided equally frequent reinforcement in the presence of two stimuli but which produced markedly different rates of key-pecking. Generalization gradients were displaced away from the stimulus associated with the lower rate of key-pecking. Another group of pigeons had similar training, except that a low rate of key-pecking was established in a stimulus with a much higher frequency of food reinforcement. In this case, the generalization gradients were not affected by the training on the schedule producing a low response rate.     

Depressed people are not less motivated by personal goals but are more pessimistic about attaining them

Despite its theoretical importance, personal goal motivation has rarely been examined in clinical depression. Here we investigate whether clinically depressed persons (n = 23) differ from never-depressed persons (n = 26) on number of freely generated approach and avoidance goals, appraisals of these goals, and reasons why these goals would and would not be achieved. Participants listed approach and avoidance goals separately and generated explanations for why they would (pro) and would not (con) achieve their most important approach and avoidance goals, before rating the importance, likelihood, and perceived control of goal outcomes. Counter to hypothesis, depressed persons did not differ from never-depressed controls on number of approach or avoidance goals, or on the perceived importance of these goals. However, compared to never-depressed controls, depressed individuals gave lower likelihood judgments for desirable approach goal outcomes, tended to give higher likelihood judgments for undesirable to-be-avoided goal outcomes, and gave lower ratings of their control over goal outcomes. Furthermore, although controls generated significantly more pro than con reasons for goal achievement, depressed participants did not. These results suggest that depressed persons do not lack valued goals but are more pessimistic about their likelihood, controllability, and reasons for successful goal attainment.     

Observing Behavior Topography in Delayed Matching to Multiple Samples

The Psychological Record - This study examined relations between eye movements and accuracy scores in a delayed matching-to-sample procedure with multiple sample stimuli. Four adult humans...     

Autobiographical memories and views of the future: In relation to dysphoria

The present study investigated dysphoric individuals' self‐referential processing of autobiographical memories and future personal events, in relation to specificity and response latency. Dysphoric individuals (n  =  17) and nondysphoric controls (n  =  17) were selected from a larger sample based on self‐reported depression. Participants completed an autobiographical memory task (AMT) and a future event task (FET), using pleasant and unpleasant (anxiety‐relevant, depression‐relevant) emotional word cues. In response to each emotional cue, participants were required to access and write down a specific personal memory and future event, respectively. Consistent with the hypotheses, dysphoric individuals were less specific in describing pleasant and unpleasant experiences (particularly pleasant), irrespective of time condition. As expected, dysphoric individuals' specificity for distinct depression‐relevant and anxiety‐relevant experiences did not differ significantly. As predicted, all participants were less specific in describing future personal events than in recalling personal memories. As predicted, dysphoric individuals took longer to think of pleasant memories and pleasant future experiences than controls but, as expected, groups did not differ significantly on mean reaction times for past and future unpleasant experiences. Overall, the data showed a degree of consistency in participants' past and future‐oriented processing of self‐referential material. Although considerable research has investigated autobiographical memories in relation to emotional disturbance, the present findings suggest that constructing future emotional experiences is also an important aspect of mental health.     

Involving parents in child sexual abuse prevention programs

Conclusion The importance of involving parents in child sexual abuse prevention programs has been given much lip-service by prevention educators, but relatively little time, energy or resources in reality. This seems short-sighted at best, if the goal of these programs is truly prevention as they purport. Although the results of this study may have limited generalizability because of its sample size and its highly educated respondents, it is the first study to compare the knowledge of attending versus nonattending parents of a typical one-shot parent workshop. The results indicated that the parents as a whole were fairly well versed in the facts of sexual abuse, although as in previous studies, they did not extend the statistics on sexual abuse to their own children. However, probably the most important results were the enthusiastic responses for parent programs and involvement but in different formats, at different times, and in different environments than the current typical PTO evening, one-time meeting. Clearly child sexual abuse prevention programs should experiment with innovative ways to reach parents. If prevention programs can involve a small minority of motivated parents as they seem to be able to do, then together these parents and the educators may be able to develop methods and resources to involve the large majority of currently uninvolved parents. Such an integrated and involving community approach to the prevention of child sexual abuse seems necessary if the goal of prevention is ever going to be reached.