Transfer of inhibition after serial feature negative discrimination training

Three experiments examined the transfer of inhibition in Pavlovian serial feature negative (A+, X→ A−) discriminations in a conditioned suppression situation with rat subjects. Consistent with our previous report (P. C. Holland & J. Lamarre, Learning and Motivation, 15, 219–243), the feature (X) showed little or no ability to inhibit suppression to another conditioned excitor (B) that had been consistently reinforced. Nor was substantial transfer observed to excitors that had been partially reinforced, or conditioned, extinguished, and then reconditioned. However, X readily inhibited suppression to an excitor that had been trained within another serial feature negative discrimination (B+, Y → B−). These latter data are difficult to reconcile with our previous proposal that inhibitors established with serial procedures act on particular conditioned stimulus-unconditioned stimulus associations. We suggest that serial feature negative discriminations endow both the feature (X) and the excitor (A) with special properties.     

Transfer of inhibition after serial and simultaneous feature negative discrimination training

Three experiments examined the nature of inhibitory learning in Pavlovian simultaneous (A+, XA-) and serial (A+, X → A-) feature negative discrimination prodecures in a conditioned suppression situation with rat subjects. The feature (X) trained with simultaneous procedures readily inhibited suppression conditioned to another excitor (B) that was not involved in the feature negative discrimination with X. But the feature trained with serial procedures showed little or no ability to inhibit suppression conditioned to other excitors. These results were obtained with both between- and within-subjects designs, with a variety of test procedures, and after extinction of the A excitor used to establish the inhibition to X. They suggest that nature of the inhibition learned in feature negative discriminations depends on the temporal arrangement of stimuli. We favored the possibility that inhibitors established using simultaneous stimulus arrangements modulate behavior by acting on a representation of the unconditioned stimulus, but inhibitors established with serial procedures act on particular conditioned stimulus-unconditioned stimulus associations.     

Issues in the effective use of computers in introductory and advanced courses in psychology

The recent proliferation of time-shared terminals, computers, and instructional software is producing a dramatic change in undergraduate education in psychology. Although computers have been used for many years in research in psychology, their use as instructional alternatives only recently has been thrust upon the academic community, a development for which many faculty-even experienced computer users—are ill prepared. The use of computers and microcomputers in instruction can provide the instructor, and more importantly, the student, with an effective pedagogical tool. However, computers cannot be introduced into the curriculum in a piecemeal or haphazard fashion. In this paper, issues involved in the effective introduction and use of computers in teaching are outlined.     

Evaluation of a Web-based introductory psychology course: I. Learning and satisfaction in on-line versus lecture courses

We offered introductory psychology on the World-Wide Web (WWW) and evaluated the on-line format relative to the traditional lecture-test format, using a pretest-posttest nonequivalent control group design. Multiple sections of the introductory course were offered each semester; on-line and lecture sections were taught by the same instructor, the same textbook was used, and the same in-class examinations were taken. For on-line sections, mastery quizzes, interactive individual exercises, and weekly laboratory meetings replaced lectures. Increased content knowledge was greater for the students in the Web sections, as was in-class examination performance. Use of the WWW and computers for academic purposes increased more in the on-line sections, and the on-line students showed a greater decrease in computer anxiety. The students in the on-line sections expressed appreciation for course components and the convenience of the course, but the lecture sections received higher ratings on course evaluations than did the on-line sections. Learning and course satisfaction were dissociated in the two course formats.     

Transfer of training and skill assumptions in tracking tasks

Matched groups of subjects were used to test the learning and transfer effects that follow changes in the display, the muscular reactions and the directional relationship between stimulus and response in a tracking task. Two arrangements were compared in the relationship studies: one arrangement of the stimuli and reactions was similar, and the other was opposed to that used in many every-day skills. The familiar arrangement was easier to learn. There was high positive transfer from the unfamiliar to the familiar, and little transfer from the familiar to the unfamiliar.

The physical dimensions of the display were varied to give two tasks with different stimuli. The initial learning times were equal for both tasks, and the transfer between them was high, positive, and equal. Two further tasks varied in the extent, speed and force of the required muscular movements. One task proved more difficult to learn initially, and there was greater transfer from the difficult to the easy task than from the easy to the difficult. A further experiment tested the effects of changing the difficulty of a tracking course, and it was found that learning was more rapid on the more difficult course. A difference in difficulty between two tasks, therefore, determined both the amount of transfer between them and the rate of learning the tasks.

New measures were developed to test the transfer between tasks of unequal content, and the effect of such inequalities upon the rate of learning. The findings are discussed, as are their possible implications for transfer measurement and their bearing upon existing theories of transfer.     

Light-hearted negative terminology used in computer education and related skill of noncomputer users

Theory suggests that light-hearted but negative phrases and terminology used in computer literature and course titles may have a negative effect on noncomputer users. This study tested the effect of providing the suggestion of a negative dimension of computer ability labelled with a category of "Computer Dummy" a also the relation between computer ability and computer anxiety. The study incorporated 37 noncomputer users, 17 men and 20 women whose mean age was 52.1 yr. Scores on a self-report questionnaire indicated that 23 of the nonusers responded on the negative dimension of computer ability and included themselves in the category of "Computer Dummy." Also, belief about ability and belief about computer training were associated with computer anxiety for noncomputer users.     

Transfer of negative occasion setting and conditioned inhibition across conditioned and unconditioned stimuli

The transfer of negative occasion setting and conditioned inhibition across conditioned stimuli (CSs) and unconditioned stimuli (USs) was examined in four experiments that used Pavlovian appetitive feature negative discrimination training procedures with rats. After training with simultaneous compounds (A+, XA-), X inhibited conditioned responding (CRs) elicited by other CSs and CRs supported by other appetitive USs that had not been involved in discrimination training. After training with serial compounds (A+, X----A-), X's power to set the occasion for nonresponding transferred across CSs and USs only if those events had also been involved in serial feature negative discrimination training. The results supported the suggestion that the acquisition of negative occasion setting involves the representation of individual events in a higher order memory system, separate from that involved in simple association, and that negative occasion setters act only on events that are represented in that system.     

I am ... , I have ... , I suffer from ... : A Linguist Reflects on the Language of Illness and Disease

Part personal documentary, part exercise in medical semantics, this essay brings the analytical tools of a linguist and the human perspective of a patient receiving treatment in the American health care system to bear on the language we use—for the most part unconsciously—to talk about illness and disease. Topics to be explored include linguistic ramifications of the illness/disease distinction; referring expressions for health disorders; the “linguistic construction” of disease (what's in a name?); the “translation” of biomedical information from the specialists' dialect into everyday idiom; and the metaphoric/symbolic dimension of body-parts and their afflictions.     

Professionals' negative expectations of boys from father-headed single-parent families: Implications for the training of child-care professionals

The study explored the possibility that individuals' assessment of children's personality and behavioural functioning may reflect stereotypic perceptions involving more negative expectations of boys from father-headed as opposed to mother-headed single-parent families. These hypotheses were based upon the assumptions of the pre-emincnce of the maternal role in the parent-child relation. The objective was to determine whether stereotypic perceptions, if any, prevail equally or differentially among laypersons and trained professionals such as teachers and social workers. Consistent with the hypotheses, the findings showed that both laypersons and professionals had more negative expectations of boys from father- as opposed to mother-custody homes. Comparison of laypersons with the professional group of teachers and social workers combined showed no significant differences between the perceptions of these two groups of respondents. The teachers, however, had significantly fewer stereotypic negative perceptions of boys from father-headed families than laypersons and social workers. The implications of the findings are discussed for the welfare of the children and their single parents, and the training of professionals.     

Effects of generalized self-efficacy and negative social comparison feedback on specific self-efficacy and performance

The effects of social comparison feedback on specific self-efficacy and performance of high generalized self-efficacy participants and low generalized self-efficacy participants were examined with the help of 20 participants with high generalized self-efficacy and 20 participants with low generalized self-efficacy. Half of the participants in each generalized self-efficacy group received negative social comparison feedback after each of four trials of an experimental task while the other half received no feedback. Two kinds of specific self-efficacy-performance-based and normative-based--were measured once before the task and four times after the trials of the task. After the task, the High generalized self-efficacy/Feedback group rated performance-based specific self-efficacy higher and performed better than the Low generalized self-efficacy/Feedback group. No significant difference was observed between the High generalized self-efficacy/No feedback group and Low generalized self-efficacy/No feedback group. There were no significant effects with regard to normative-based specific self-efficacy.