Conceptual structure and the structure of concepts: a distributed account of category-specific deficits

We present a new account of the fine-grained structure of semantic categories derived from neuropsychological, behavioral, and developmental data. The account places theoretical emphasis on the functions of the referents of concepts. We claim (i) that the distinctiveness of functional features correlated with perceptual features varies across semantic domains; and (ii) that category structure emerges from the complex interaction of these variables. The representational assumptions that follow from these claims make strong predictions about what types of semantic information are preserved in patients showing category-specific deficits following brain damage. These claims are illustrated with a connectionist simulation which, when damaged, shows patterns of preservation of distinctive and shared functional and perceptual information which varies across semantic domains. The data model both dissociations between knowledge for artifacts and for living things and recent neuropsychological evidence concerning the robustness of functional information in the representation of concepts.     

The role of learning history in current sick-role behavior and assertion

It has previously been suggested that sick-role or illness behavior has learned components which may contribute to the maintenance of an individual's negative physical condition. The present study was designed as an elaboration on the role of learning history in the production of current sick-role behavior. A total of 180 college students responded to an inventory which consisted of 15 questions. The inventory looked at parents as role models for assertion and illness behavior, as well as the individual's own history of assertiveness, illness and positive reinforcement for illness behavior. Multiple stepwise regressions were performed on the data. The results indicated the best predictors of current work or school avoidance were their own history of stopping work and absence from school as a child, their fathers' work history of work avoidance, and low assertion. The best predictors for an individual's self report of positive reinforcement for illness behavior were a history of similar reinforcement as a child and their mothers history of attention for illness behavior. The fathers' work avoidance when ill was the third predictor for positive reinforcement for illness behaviour in the females. Finally, the best predictors for the male Ss' current assertion were assertion as a child, the mothers' assertion and a low frequency of school absence and work avoidance as a child. For females, the best predictors of current assertion were assertion as a child and a high frequency of current work and school avoidance. Discussion focuses on the implications of these results for future research.     

Growth counseling: A dialogue with Howard Clinebell

This interview describes an emerging tenor in pastoral psychology, growth counseling. Philosophically cultivated by the Human Potentials Movement, this school of counseling has genetic components in biblical theology, as well as intrapsychic and interpersonal psychotherapy. Church-related issues are also linked, especially crisis intervention models for the laity and the pastoral counselor's unique vantage for ministry. In addition to these characteristics, the dialogue underscores two other concerns many health care professionals share: (1) a deemphasis of psychopathology via a renewed emphasis of the human growth drive; and (2) the therapeutic complementarity of affirmation vis-à-vis empathic confrontation.He is also Research Chairman of the American Association of Pastoral Counselors' Southeast Region, as well as Book Review Editor for thisJournal.     

Selecting University Lecturers: What is and Should be Done

This paper presents a survey designed to identify the procedures used by British university departments when selecting academic staff and compare them with typical practice in other UK organizations. The results indicate that, compared with other large organizations, university departments make much less use of psychometric tests or assessment centres, relying heavily on the application form, a single interview and a presentation. There were no differences between academic departments of English, Biology or Psychology and the level of academic appointment only affected the composition of the interview panel. Possible reasons for the failure to use modern objective methods of selection are considered. It is argued that universities should apply more objective selection methods based on a full analysis of the competencies required of the higher education lecturer.     

Some Effects of Crowding in a Prison Environment1

Inmates at a federal correctional institution were examined for their criterion of what constitutes overcrowding. In general, inmates who were housed under highly crowded conditions exhibited less tolerance of overcrowding than did those who were housed under relatively less crowded conditions. Higher crowding also yielded more negative affective responses to the physical environment. This relationship existed only with respect to a social-density measure of crowding and not for a spatial-density measure.     

Environmental Influences on Aggression: The Effects of Darkness and Proximity of Victim

It was hypothesized that darkness acts as a disinhibitor, and that subjects would deliver higher intensity shocks to a victim in a dimly lit setting than in a brightly lit setting. It was also predicted that this effect would be greater when subject and victim were in close proximity than when they were isolated from each other. The results supported these predictions. It was suggested that lighting may have important effects on social behaviors, and that further research on the influences of lighting on human behavior is needed.     

A mathematical theory of instruction: Instructor/learner interaction and instruction pacing

In this paper, a mathematical theory of instruction applicable in the educational environment is developed from concepts of psychological learning theory. Within the framework of optimization and control theory, the dynamics of the interaction between instructor and learner are modelled, and the trade-off between instruction cost and learner achievement is formulated so that optimal instruction inputs can be determined. One important aspect of the classroom environment that is characterized by the theory is the interaction between an instructor and a group of learners with various learning abilities.A basic dynamic model that relates learner achievement and instruction cost is developed from learning theory concepts. This model, which applies to the individual learner situation, is analyzed in detail to determine instruction intensity inputs that match the learner's characteristics in order to maximize an objective that measures both achievement and cost.This basic model is used as a building block to describe how individual learner achievement depends on instruction pacing. To determine optimal instruction pacing the concept of gain, which is essentially learner achievement per unit time, is introduced. In this extended model, instruction pacing is intimately related with the concept of learner aptitude. This relationship leads immediately to the consideration of instruction pacing for a group of learners with various aptitudes and thus optimal instruction pacing is determined for nonhomogenous groups.Throughout the development of the theory, hypothetical examples are presented to demonstrate many of the implications of the theory. One of the contributions of the theory is the definition of the concepts of learner aptitude and instruction pacing within a framework that structures the empirical investigation of these concepts by means of experimental research.