Adaptive executive control: Flexible multiple-task performance without pervasive immutable response-selection bottlenecks

A new theoretical framework, the EPIC (Executive-Process/Interactive-Control) architecture, provides the basis for accurate detailed computational models of human multiple-task performance. Contrary to the traditional response-selection bottleneck hypothesis, EPIC's cognitive processor can select responses and do other procedural operations simultaneously for multiple concurrent tasks. Using this capacity together with flexible executive control of peripheral perceptual-motor components, EPIC computational models account well for various patterns of mean reaction times, systematic individual differences in multiple-task performance, and influences of special training on people's task-coordination strategies. These diverse phenomena, and EPIC's success at modeling them, raise strong doubts about the existence of a pervasive immutable response-selection bottleneck in the human information-processing system. The present research therefore helps further characterize the nature of discrete versus continuous information processing.     

On Seeing to the Horses: Issues in Teaching and Learning in Theology and Religious Studies After Bonino and Lindbeck

This article re-examines so-called “experiential approaches” to theology and religious studies. In affirming the need of the educator to attend to both cognitive and affective aspects within teaching and learning, and in using many concrete examples from classroom practice, the article critically engages with Latin American liberation theology and post-liberalism in an attempt to clarify what “experience” is being referenced when “experiential methods” are used. The importance of the concrete worlds of individual students, the responsibility of educators to be conscious of their own power in shaping the educational experience, and the desirability of attending to issues surrounding economic disadvantage within theology and religious studies feature prominently in the study. We conclude that, though no experience is neutral, educational contexts in theology and religious studies can offer exemplary settings for profound self-discovery, exploration, and personal development through the “hermeneutical friction” created by critical examination of the narrative worlds within which we live.     

A panel study of married women's work patterns

In the attempt to overcome shortcomings of previous research on women's employment patterns, married women's employment behavior was examined successively over a five year period (1976–1981). Logistic regression and discriminant function analyses were performed on a sample of 366 wives in dual earner families from the Panel Study of Income Dynamics. Attitudes as well as work and family factors differentiated women who worked continuously full-time from women who worked either part-time or intermittently during the five year period. The findings are discussed in the context of social change and the impact of changing norms on married women's work patterns.An earlier version of this paper was presented at the Annual Meeting of the American Psychological Association, New York, NY, August 1987. Comments and suggestions of Barbara A. Gutek are greatly appreciated.     

Sexual harassment on campus: Effects of professor gender on perception of sexually harassing behaviors

Undergraduate students viewed four videotaped vignettes that depicted potentially sexually harassing interactions between professors and students. Subjects were asked to evaluate the professor's behavior. The vignettes were composed so that two dimensions were manipulated: the sex of the initiator of the behavior and the type of behavior. Results of the study provided partial support of the following hypotheses: (1) the behaviors of female professors initiating potentially sexually harassing behaviors toward male students would be perceived as more appropriate than would the same behaviors initiated by male professors toward female students in identical situations; (2) female subjects would interpret the behaviors as more harassing than male subjects; and finally (3) subtle forms of harassment would be interpreted as more inappropriate by female students than by male students.     

ACQUISITION OF SIGN LANGUAGE BY AUTISTIC CHILDREN. I: EXPRESSIVE LABELLING

There has been growing interest in teaching sign language to autistic children who have failed to develop speech. However, controlled experimentation in this area is nonexistent. In the present study, four nonverbal autistic children were taught expressive sign labels for common objects, using a training procedure that consisted of prompting, fading, and stimulus rotation. The efficacy of the procedure was demonstrated in a multiple-baseline design across objects. The results were reliable, replicable across children, and generalizable across therapists. A stimulus control analysis demonstrated that, for three of the children, correct signing was controlled solely by the visual cues associated with the presentation of a given object and was independent of the auditory cues related to the same object. These latter results are discussed with respect to the known perceptual and linguistic deficits of autistic children.     

The development of occupational sex-role stereotypes: The effects of gender stability and age

This study investigated occupational sex-role stereotypes of nursery school, kindergarten, third-grade, and sixth-grade children, and the effects of their acquiring gender constancy, specifically the concept of gender stability. Two types of occupational attitudes were assessed: (1) personal aspirations (PA) and (2) ideas about jobs men and women do. The latter were determined using the Occupations Survey (OS). Children chose stereotyped occupations for themselves even before they had a concept of gender stability. Boys' personal aspiration responses were more stereotyped than girls'. On the Occupations Survey, gender-stable nursery schoolers' responses were more stereotyped than those of the nonstable children; and a significant effect for age was found, with stereotyping decreasing among third graders and sixth graders. No sex differences were found on the OS. Differences in the two areas of occupational attitudes suggested two processes of learning sex roles. Social learning more readily accounts for the early stereotyped answers on the PA. Cognitive developmental theory is congruent with the OS scores of the nursery school children.     

Effectiveness of the counterconditioning procedure in eliminating avoidance behavior

Data were obtained on the effectiveness of three forms of counterconditioning—each differing in the degree to which competing responses were introduced. Counterconditioning was also compared with an extinction procedure in eliminating an instrumental avoidance response. Only the counterconditioning procedure which evoked and reinforced another conditioned response during extinction of the avoidance response, was significantly more effective than a traditional extinction procedure in achieving a decrement in avoidance responding and this was only on the first session on which such procedures were in effect. When the opportunity to perform the competing response was removed, only Ss in this group evidenced a significant increase in avoidance responding.

All procedures were equally effective over sessions in eliminating avoidance behavior. A delay in effectiveness occurred to the degree to which a procedure introduced a competing response. It was in terms of the immediacy of response reduction and achievement of a very low rate of responding with very few responses being performed, that the counterconditioning procedure was superior to the extinction procedure.

The implication of these results for behavior theory and therapy were elaborated.