Tunnel memory for traumatic events

In four experiments subjects remembered the critical information in a traumatic slide as either more focused spatially than in its original presentation or more focused spatially than information in a matched neutral slide. Subjects comprehend a neutral scene by automatically extending its boundaries and understanding the visual information in a broader external context. However, when subjects are negatively aroused by a scene, they process more elaborately those critical details that were the source of the emotional arousal, and they maintain or restrict the scene's boundaries. ‘Tunnel memory’ results from this greater elaboration of critical details and more focused boundaries. Tunnel memory may explain the superior recognition and recall of central, emotion-arousing details in a traumatic event, as shown in previous research on emotion and memory. © 1998 John Wiley & Sons, Ltd.     

Involvement of amygdala in inhibitory control over aggression in the rat: A synopsis

An experimentally produced hyperreactivity facilitates initiation of mouse-killing in rats that did not previously develop any stable inhibition of interspecific aggression. Destruction of the corticomedial amygdala or interruption of the stria terminalis interferes with the development of such an inhibition on the basis of “social” influences, whereas lateral amygdaloid lesions have no effect on mouse-killing.     

Relationship between mousekilling and conspecific aggression in the male rat

In order to investigate the relationships between mousekilling and conspecific aggression, behavioral variables of killer and nonkiller rats were compared in a “resident-intruder” paradigm, in resident as well as in intruder animals. The occurrence of offensive items (offensive sideways, attack) was significantly higher in killer rats when they were residents; their corresponding opponents displayed more defensive behaviors. No significant difference in aggressive behaviors was noted when the comparison was done in the intruders. These results and those of previous studies suggest that there is a correlation between mousekilling and intraspecific offensive behaviors. Some similarities in the situations where both behaviors are elicited–eg, introduction of an unfamiliar intruder into a familiar environment–may contribute to the existence of such a correlation and the possibility of common mechanisms underlying both behaviors is discussed.     

An Evaluation of the Rorschach Method for the Study of Brain Injury

Hospitalized psychiatric patients (n = 115) completed either Form A or Form B of the Whitaker Index of Schizophrenic Thinking, along with the Beck Depression Inventory, State Anxiety Inventory, and the MMPI. Only error scores on the WIST were calculated in an effort to assess validity of the WIST for use in group testing situations where individual timing and administration is cumbersome. Results supported the convergent and discriminant validity of Form A where significant correlations were found with measures of thought disorder (M M PI F, Pt, Sc and Pa) but not with indices of other symptomatology, such as depression and anxiety. Form B did now show such validity, with only one significant correlation with other measures (MMPI Pd). Both WIST Forms correctly identified nonschizophrenics (76% for Form A and 73% for Form B) more often than schizophrenics (57% for each form). Also, Form A was found to be negatively related to years of education. Suggestions for further research on the influence of intelligence and social class variables on WIST scores were made. Overall, Form A emerged as the most valid WIST form, with suggestions for its clinical use being offered.     

Seeing the beauty in everyday people: a qualitative study of young Australians' opinions on body image, the mass media and models

While governments have called for greater body size diversity in media imagery to promote positive body image and prevent disordered eating, the fashion and advertising industries often argue that average-size models do not appeal to consumers. Focus groups were conducted with 76 young Australian women and men to provide a previously neglected consumer perspective on this debate. Thematic analysis identified dissatisfaction with the restricted range of body sizes, and the objectification of women, in media imagery. Participants indicated a desire for change and positive reactions to average-size models in advertising, but also suggested barriers to their increased use, including concerns about the promotion of obesity. The results suggest that there is some consumer support for increased body size diversity in media imagery. Consumer and industry barriers, however, will need to be addressed in the future if this is to be an effective public health intervention to promote positive body image.     

Intimacy, identity and status: Measuring dating goals in late adolescence and emerging adulthood

Individuals?? goals can direct their own social behavior and development. We extended and validated a social dating goals measure (SDGS-R) to assess identity, intimacy and status goals, and compared goals by age, gender, sexual orientation and romantic status. Participants were 121 adolescents and 249 emerging adults (age M?=?20.6). The expected 3-factor structure of the SDGS-R was found and confirmed (18 items). Identity, intimacy and status goals had small correlations with each other and analyses validated the meaning and uniqueness of each goal. Participants reported more identity and intimacy goals than status goals. Intimacy goals were more prominent among older compared to teenage participants and those with a partner rather than without one. Females reported more identity dating goals than males. There was no difference in the goals of same-sex and other-sex attracted youth. The availability of the SDGS-R will allow further study of romantic development and relationship functioning.     

Motivating and reinforcing functions of the male sex role: Social analogues of partial reinforcement,delay of reinforcement,and intermittent shock

After listening to a masculine male, female subjects learned an instrumental escape response reinforced by the opportunity to listen to an androgynous male. The results of three experiments revealed a striking correspondence between conventional learning variables and social analogues of acquisition, partial reinforcement, delay of reinforcement, and intermittent shock. Subject responses to a postconversation questionnaire indicated that the comments made by the androgynous male were judged as more appropriate and more honest, and he was rated as more likable, more intelligent, more moral, and more mentally healthy, than his masculine counterpart. Discussion focused on the importance of investigating male sex role action using additional theoretically relevant social analogues of conventional learning variables and other familiar learning paradigms.     

The effects of delay on neonatal retention of habituated head-turning

Recovery of neonatal head orientation following auditory habituation was used to examine the effects of intertrial delay. One of two words served as stimuli with criterion orienting and habituation established before the delay. Fifty-six full-term neonates were assigned randomly to one of four delay groups: 10 (control), 55, 100, or 145 s. The percentage of head-turns toward the sound source (with one turn per trial) for blocks of three trials served as the principal dependent variable. Recovery of localized head-turning increased as length of delay increased, with the 100- and 145-s groups showing greater recovery than the 10- and 55-s groups. Infants presented with control trials systematically turned away from the sound source following habituation. Selective sensory adaptation, spontaneous recovery, and short-term memory interpretations of these data are considered.     

Relationships among affective and cognitive factors in humor

One hundred and twenty-five college students rated a total of 74 jokes, chosen by stratified sampling, on funniness and on 13 other scales suggested by humor theories. Highly similar factor structures were found with two sets of jokes. Ratings of surprise, resolution, and originality correlated strongly with funniness and helped define a factor on which funniness ratings loaded. Scales pertaining to painfulness, anxiety, or importance of joke topic were positively correlated with funniness but defined a factor essentially independent of it. Partial correlations suggested that these scales were related to funniness through their common relationship with incongruity and resolution scales. Ratings of how much a joke made subjects “feel free” correlated much more highly with ratings of incongruity and resolution than with ratings of painfulness, anxiety, or importance of joke topic. Results were interpreted as providing support for an incongruity-resolution theory of humor, and for the interdependency of affective factors with incongruity-resolution mechanisms.