Students' perceptions of male sexually aggressive behavior as a function of educational level and gender

Two hundred and four students (108 college freshmen, sophomores, juniors, and seniors; 96 high school juniors and seniors) participated in this study. The socioeconomic status of the participants (high school = 93% Caucasian, 7% African-American; college = 96% Caucasian, 4% African-American) was primarily in the lower middle-class range. The purposes of this investigation were (1) to test whether or not differences exist between high school and college students' perceptions of one form of male sexually aggressive behavior against women, (2) to determine if differences exist between male and female students' perceptions of such behavior against women, and (3) to explore the sex role socialization theory by providing empirical observation of its basic tenets. Findings suggested that boys may experience slower maturation and development of sensitivity toward sexual aggression than girls, but that this gap may lessen with advancing age for college males.     

Development of co-feeding behavior in young wild Japanese macaques (Macaca fuscata)

This study describes the developmental course of the social context of feeding behavior in infants and yearlings of Japanese macaques in a provisioned free-ranging troop. Results of this longitudinal study revealed that infants and yearlings exhibited synchronous feeding behavior in the majority of cases in which they had feeding neighbors within 1 m. They consistently showed feeding behavior more often when their closest neighbor fed than when they did not. In feeding situations, infants tended mainly to be in close proximity with their mothers in the early stages of life and, later, also with peers. The results imply that potential opportunities for the social transmission of food selection habits are available for young Japanese macaques in the wild.     

A Cross-Cultural Analysis of Personality Structure Through the Lens of the HEXACO Model

Across 5 different samples, totaling more than 1,600 participants from India, Indonesia, Oman, Romania, and Thailand, the authors address the question of cross-cultural replicability of a personality structure, while exploring the utility of exploratory structural equation modeling (ESEM) as a data analysis technique in cross-cultural personality research. Personality was measured with an alternative, non–Five-Factor Model (FFM) personality framework, provided by the HEXACO–PI (Lee &; Ashton, 2004 Lee, K., &; Ashton, M. C. (2004). Psychometric properties of the HEXACO personality inventory. Multivariate Behavioral Research, 39, 329–358.[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]). The results show that the HEXACO framework was replicated in some of the investigated cultures. The ESEM data analysis technique proved to be especially useful in investigating the between-group measurement equivalence of broad personality measures across different cultures.     

Call usage learning in gray seals (Halichoerus grypus)

Call usage learning can be demonstrated on 4 different levels: signaling on command, signaling and refraining from signaling on command, responding to a trained stimulus with a signal from a specific signal class, and responding to the playback of any untrained stimulus with one from the same signal class. Two young gray seals (Halichoerus grypus) were trained successfully to demonstrate the first 2 levels. They also learned to respond to 9 moan stimuli and 9 growl stimuli with vocalizations of the same class (Level 3). However, novel moan and growl stimuli tended to elicit growls. This casts doubt on the possibility that gray seals can reach the 4th level, but it demonstrates that they are capable of the first 3 levels of usage learning.     

When it is better to give than to receive: long-term health effects of perceived reciprocity in support exchange

The authors examined esteem enhancement theory and equity theory in explaining the long-term health status of men (n = 178) and women (n = 575). Baseline characteristics were measured in 1990-1993, intimate reciprocity in 1993, and recorded sickness absences for a 9-year period during 1993-2001. Among women, giving more support than receiving in intimate relationships positively affected subsequent health status, as indicated by fewer sickness absences. Among men, receiving more support than giving predicted fewer absences. These effects remained even after significant covariates were included in the model. Thus, women seem to benefit from giving support in intimate relationships, and men seem to benefit from receiving support in intimate relationships. The findings on women are in line with the esteem enhancement theory. No support was obtained for the equity theory.