Multiple reinforcement contingencies to reduce aggression,self-injury and dysfunctional verbal behaviors in an adult who is sensory impaired

Differential reinforcement of other behavior (DRO) and differential reinforcement of low rates of responding (DRL) have been effective techniques in reducing maladaptive behaviors in therapeutic settings. Reported studies of these reinforcement-based procedures indicate that they are usually implemented in isolation, targeting only a single behavior or class of behaviors. In this study, multiple DRO and DRL contingencies were utilized concurrently in reducing two distinct classes of behaviors with a 26 year-old blind man with moderate retardation. One class of behaviors included socially inappropriate verbalizations, while the other included aggressive, self-injurious and environmentally destructive behaviors. Distinct contingencies were established according to the functions of the targeted behaviors and their severity and separate schedules of reinforcement were derived from baseline frequencies. Over a period of 20 months, the differential reinforcement interventions resulted in rapid reduction of behaviors in both classes to near-zero rates and frequencies were maintained at this low level while contingency schedules were systematically lengthened. Collateral effects are discussed including performance in functional academics and participation in community integration activities.     

The Influence of Observed Alcohol Consumption on Perceptions of Initiation of Sexual Activity in a College Dating Situation

Corcoran and Bell (1990) found differences between men and women's expectancies for the likelihood of sexual intercourse on a first date depending on how much the other had to drink. The present study examined the subjects' perceptions of likelihood of male and female initiation of sexual intercourse in a story in which the drinking of male or female characters was varied. Subjects read a story of a first date in which one character. either the male or female, consumed a couple of cocktails. The other character either "also had a couple of cocktails.""drank soft drinks," or "became slightly intoxicated." A manipulation check showed that the subjects were responding to story variables in their ratings of characters intoxication. Men were perceived to be more likely than women to initiate intercourse across all drinking conditions, although results indicate that all subjects believed that sexual activity was more likely to be initiated when story characters consumed alcohol rather than soft drinks. These results further demonstrated that this expectancy for initiation of sex appears to be triggered by the presence of alcohol and did not significantly increase for a higher dose of alcohol. More research is necessary to clarify the role of alcohol in sexuality among adolescents and young adults.     

The effects of hemispheric differences on feature perturbations

Summary Hemispheric differences for feature perturbations were investigated in two experiments. Stimulus displays consisting of five small squares arranged in a single row were presented tachistoscopically, with the subject instructed to state in which square a horizontal tick mark was located. Ticks could occur in any of the three middle squares, with half of the ticks presented on the inside and half presented on the outside of the square in relation to the fovea. Experiment 1 presented each array of five squares to the right or left of fixation at one of three distances from the fovea. Experiment 2 manipulated the distance between the squares and kept foveal distance constant. In each experiment, fewer errors were made when stimuli were presented to the left visual field/right hemisphere than when they were presented to the right visual field/left hemisphere, when ticks migrated toward the fovea. Experiment 1 found that increasing the distance from the fovea increased the error rate, but did not change the hemispheric differences. Experiment 2 found that increasing the distance between the squares did not change hemispheric effects reliably. The data imply that hemispheric differences for perceptual processing begin very early during sensory analysis.     

The effects of voluntary lateral orienting on positive manifold for lateralized cognitive tasks

As an extension of previous studies (Urbanczyk, Angel, & Kennelly, Brain and Cognition, 8, 206-226) examining the effects of unimanual tapping on lateralized cognitive tasks, lateral body orienting was added to an established dual task paradigm to generate differential hemispheric activation and shifts of attention. One hundred twenty right-handed university students retained sequences of digits or spatial locations for 20 sec either alone or during finger tapping. By turning head and eyes left or right, the hemisphere congruent with the sequences (LH for digits, RH for locations) or incongruent (vice versa) was activated. Activation had little effect on retention means but greatly affected resource composition, supporting task performance. Congruent orientation produced significantly higher positive correlations between digit and location tasks than incongruent orientation. Females showed higher sequence retention correlations than males across both orienting groups. For females, congruent activation enhanced tapping rates and tapping-retention task correlations. For males, activation affected neither of these. These results suggest that congruent attentional orienting may couple or integrate regions of the less activated hemisphere into networks of the more activated hemisphere. Greater inter- and intrahemispheric connectivity in the female cortex may produce a greater dependence upon a general attentional "resource."     

RELATING SCIENCE AND THEOLOGY WITH COMPLEMENTARITY: A CAUTION

Abstract. I examine Helmut Reich's recent ( Zygon , December 1990) discussion of the complementarity model for relating science and theology and find it confusing. On the one hand, his complementarity purports to make science and theology relevant for each other. It even requires we solve their conflicts. On the other hand, it discourages the overlap of scientific and theological knowledge and thus the direct resolution of their conflicts.     

Visual discrimination learning and transfer in rats with hippocampal lesions

Two experiments were performed on rats with hippocampal brain damage and on a control group with neocortical lesions. In the first experiment the hippocampal group learned a difficult visual discrimination as promptly as the controls, and neither group was subsequently impaired by adding relevant or irrelevant background cues to the original stimuli. In the second experiment the animals learned a simultaneous visual discrimination in which the stimuli differed in both brightness and orientation. The hippocampal group was impaired relative to the controls on acquisition, and showed poorer transfer to stimuli differing only in brightness or orientation. The results are incompatible with the hypothesis which attempts to explain the effects of hippocampal damage by a widespread reduction in sensory gating, but they are consistent with a more restricted version of the same hypothesis.     

Job-seeking behavior: A segment of vocational development

This paper reports two companion studies which establish that there is a significant relationship between an individual's personality characteristics and his pattern of job-seeking behavior. Individuals who are tough-minded, independent and nonneurotic had specified job goals and self-actualized behavior. They were highly successful in obtaining jobs. Individuals who were sensitive, dependent and neurotic had vague goals and passive behavior. They failed to get jobs. Individuals who exhibited a mixture of the cited characteristics and behavior were also exploring career options. They had a modicum of success in obtaining jobs. Job-seeking behavior as a process of vocational development is discussed.     

Effects of guilt and response modality upon associative sexual responses

Two experiments were conducted to test two conceptualizations of guilt. These were Mosher's social learning view and an avoidant-anxiety view suggested by Galbraith. Both experiments examined the effects of sexual guilt and response modality upon associative sexual responses. The results indicated that anonymity of responding increased the number of sexual responses of low guilt women but not that of high guilt women. The results were interpreted as supporting Mosher's preservation of self-esteem view of guilt.