A structural analysis of stability in the perceived form of objects rotating in depth

Summary The stability and form of the two different appearances of a simple rotating object were explained by considering both the geometric transformations interrelating these appearances and their degree of organization. The analysis was then used to guide the construction of two complex rotating objects each expected to have multiple appearances. The results of an experiment confirmed the predicted form of the objects' initial appearances (illusory), the relative stability in time of these appearances and the form of the subsequent appearances (also illusory). The veridical appearances were never seen despite continued observation during two 10 min periods.We wish to thank P. Hamilton, A. Pearsall, A. Vadum, and H. Vadum for their help with this research. Requests for reprints should be sent to the first author at 1 Howatson Way, Worcester, Massachusetts, 01609, USA     

Factors in the learning behavior of the albino rat

The table of intercorrelations published by Dr. R. L. Thorndike in theGenetic Psychology Monographs, 1935,17, No. 1, has been reanalyzed into ten factors. Rotation of the reference vectors resulted in a configuration which, for all practical purposes, may be said to show a simple structure and (except for one variable on one factor) a positive manifold. Five of the factors can be interpreted with some confidence, one only with considerable caution; three factors are specific to the apparatus employed, and for the one remaining factor, no interpretation is attempted; it appears to be a residual plane.     

The effects of mass media exposure on acceptance of violence against women: A field experiment

Two hundred seventy-one male and female students served as subjects in an experiment on the effects of exposure to films that portray sexual violence as having positive consequences. Some of these subjects had signed up to participate in a study ostensibly focusing on movie ratings. They were randomly assigned to view, on two different evenings, either violent-sexual or control feature-length films. These movies were viewed in theaters on campus and two of the movies (i.e., one experimental and one control) were being shown as part of the regular campus film program. Members of the classes from which subjects had been recruited but who had not signed up for the experiment were also used as a comparison group. The dependent measures were scales assessing acceptance of interpersonal violence against women, acceptance of rape myths, and beliefs in adversarial sexual relations. These scales were embedded within many other items on a Sexual Attitude Survey administered to all students in classes several days after some of them (i.e., those who signed up for the experiment) had been exposed to the movies. Subjects were not aware that there was any relationship between this survey and the viewing of the movies. The results indicated that exposure to the films portraying violent sexuality increased male subjects' acceptance of interpersonal violence against women. A similar nonsignificant trend was found on acceptance of rape myths. For females, there were nonsignificant tendencies in the opposite direction, with women exposed to the violent-sexual films tending to be less accepting of interpersonal violence and of rape myths than control subjects. Explanation of the data on the basis of “attitude polarization” and “reactance” effects are discussed. Also discussed are the conditions of the present research in terms of the type of stimuli used, the “dosage levels” of exposure, and the duration of effects in relation to future research and a general social climate promoting a sexist ideology.     

Increasing the Salience of Risky Sexual Behavior: Promoting Interest in HIV-Antibody Testing Among Heterosexually Active Young Adults1

The present study examines whether making the risk associated with unsafe sexual behavior more salient would increase interest in HIV testing. The HIV-related beliefs and behaviors reported by a sample of college students were assessed both before and after they had viewed a vulnerability-oriented film about HIV/AIDS. Viewing the film heightened sexually active participants' belief that they might currently be HIV seropositive. Among participants who were currently sexually active, heightened perceptions of risk and concern about sexual behavior predicted intentions to utilize HIV testing services (controlling for initial risk perceptions and behavior). Those who engaged in behaviors related to HIV testing during the 4-week period after the film had expressed stronger HIV intentions and more pronounced feelings of anxiety and concern about prior sexual behavior. These results suggest that risk-enhancing interventions can stimulate interest in HIV testing.     

On disregarding deviants: Exemplar typicality and person perception

A pervasive problem in mental life is that of exemplar selectivity or how one isolates specific category members from other instances of a class. This problem is particupared pronounced in person perception, where perceivers may routinely want to personalize selected individuals while continuing to respond towards other members of the category in a stereotype-based manner. To realize these flexible effects, we hypothesized that, when perceivers encounter a group member, they inevitably encode an exemplar-based representation of the individual in mind. Part of this representation, moreover, is information signaling the person's goodness-of-Fit with respect to his or her salient group memberships. When the representation is activated on a subsequent occasion, these inferences of category fit moderate the extent of stereotypical thinking. The results of two studies provided converging evidence for this analysis of stereotype function. Exemplar typicality moderated both the accessibility of Stereotypic knowledge (Study 1) anxd the extent to which perceivers used a stereotype to organize information about a target (Study 2). We consider the theoretical and practical implications of these findings for our understanding of the role of stereotypes in person perception.     

Metaphors and models in medicine

This paper aims to show how medical scientists may use metaphor in ways closely parallel to poets. Those who believe metaphor has any role at all in science may describe its use in various ways. Associationists think metaphors are based upon likenesses, and collapse the notions of model and metaphor together. But, as an example from the work of Louis Pasteur suggests, metaphor need not be based upon likenesses. Rather it may play a role in making possible a model'sexplanatory significance. Models may presuppose metaphors. The Pasteur example also suggests metaphor may play a part in creating likenesses through its role in classification and reclassification. It is in these ways that the use of metaphor in medical science most closely parallels that in poetry.     

Psychological stress,work satisfaction,and brain injury nursing

The psychological stress and work satisfaction of two groups of nurses working with clients having brain injuries were assessed and compared with norm groups of people working with other types of injuries and disabilities. Contrary to previously published reports, there was no evidence that the groups in this study were higher on measures of burnout than the selected norm groups. However, work satisfaction was found to be significantly lower for one of the groups when compared not only with the other group but also with the selected norm groups. This lower work satisfaction was associated with significantly lower scores on certain aspects of the work environment when compared with the other group. Results from semi-structured interviews in the study confirmed the importance of the work environment and provided additional information concerning causes of the lower work satisfaction and possible solutions.     

Dominance: Another Facet of Type A1

Aggression, but not dominance, is typically used as a criterion for the assessment of Type A behavior. This study proposed and demonstrated that nonaggressive dominance, defined as interpersonal resistance or persistence in efforts to control a competitive situation, is associated with Type A behavior for both males and females. Forty males and 35 females typed with the Jenkins Activity Survey participated in a revised version of the classic Deutsch and Krauss (1960) competition paradigm. Both A males and females were more dominant than their respective Type B counterparts. Type A males were not different from Type A females in persistence, nor were Type B males different from Type B females. Female Type A's were more resistant to their competitor's efforts at controlling the situation than were their Type B counterparts. Male Type A's did not differ from their Type B counterparts in resistance. The implications of these results in further elucidating the mechanisms underlying the relationship between Type A and pathophysiologic health hazards are discussed.     

The importance of the individual in the ‘causal’ relationship between attractiveness and self-esteem

This paper argues that many psychological explanations underlying health and social behaviour stress the importance of the relationship between attractiveness and self-esteem. The nature of this relationship is not well understood, yet can have important implications for the individual in areas of medical intervention which involve treatment on aesthetic grounds. A survey of psychosocial factors among 1018 children aged 11-12 years is reported. The study examined the association between perception of physical attractiveness and self-esteem in order to clarify the relationship between self-esteem and self versus others' perception of attractiveness. Self-ratings of attractiveness were linked to judges' ratings to determine whether subjects underrated, over-rated, or accurately perceived their own physical attractiveness. The results showed that although ratings of general facial attractiveness by others were associated with self-perceived attractiveness, in the specific area of dental health, attractiveness (as judged by others) was not. There were no significant relationships between ratings of attractiveness by others and self-esteem. Self-perception of attractiveness, however, was significantly associated with self-esteem. Further analyses showed that children who under-rated their own facial attractiveness had a lower mean score for self-esteem than over-raters or accurate perceivers (who did not differ significantly). In contrast, under-raters of dental attractiveness had a lower mean score for self-esteem than over-raters, but did not differ significantly from accurate perceivers. Over-raters of dental attractiveness had a higher mean score for self-esteem than accurate perceivers. These finding suggest that if an over-rater were to receive treatment on aesthetic grounds it is unlikely, given that they have high self-esteem already, that such intervention will have a profound psychological impact. These data indicate the importance of determining the way in which individuals evaluate their appearance compared to others, and may help to clarify previously equivocal findings concerning the relationship between self-esteem and attractiveness.