In captivity, male bonnet macaques (Macaca radiata) frequently express "friendship" toward one another, including affiliative behavior such as huddling, grooming, coalitionary support, and sitting in close proximity. The purpose of this study was to determine whether wild adult male bonnet macaques also express "friendship" by investigating whether or not (1) adult male bonnet macaques have aff...

Several hypotheses on the form and function of sex differences in social behaviors were tested. The results suggest that friendship preferences in both sexes can be understood in terms of perceived reciprocity potential-capacity and willingness to engage in a mutually beneficial relationship. Divergent social styles may in turn reflect trade-offs between behaviors selected to maintain large, fu...

Aoyama Gakuin University [email protected] Motivation is an important topic among language teachers in Japan. Collins and Hunt (2011) observed increases in Japanese university student’s motivation as a result of collaborative learning and cooperative learning programs. This paper continues in this line of inquiry through a quantitative study of motivation in the context of computer support...

Driven by existing socialization theories, this study describes specific friendship contexts in which peer influence of alcohol misuse and depressive symptoms occurs. In the fall and spring of the school year, surveys were administered to 704 Italian adolescents (53 % male, M (age) = 15.53) enrolled in Grades 9, 10 and 11. Different friendship contexts were distinguished...

This study examined concurrent and longitudinal associations among overt and social forms of aggression, peer status, and friendship quality over an 11-month period. A sample of 559 adolescents (50% girls) in grades 6-8 participated in the study. Participants completed a measure of friendship quality at both time points. Measures of aggression and peer status (preference-based and reputation-ba...

The role of physical and relational aggression in adolescents' friendship selection was examined in a longitudinal sample of 274 Chilean students from 5th and 6th grade followed over 1 year. Longitudinal social network modeling (SIENA) was used to study selection processes for aggression while influence processes were controlled for. Furthermore, the effects of network characteristics (i.e., re...

We asked 27 Euro American teens ages 16 to 17 with developmental disabilities in Los Angeles to describe friendships. Eleven characteristics of friendship reported in the research literature (similarity, proximity, transcending context, companionship, reciprocity, mutuality, intimacy, support, trust/loyalty, conflict management, and stability) were mentioned by at least some teens. However, mos...

The current study examined the best friendships of aggressive and nonaggressive boys (N = 96 boys, 48 dyads, mean age = 10.6 years). Friends completed self-report measures of friendship quality, and their interactions were observed in situations that required conflict management and provided opportunities for rule-breaking behavior. Although there were no differences in boys' self-reports of fr...

BACKGROUND Few prospective cohort studies have assessed the association between social capital and mortality. The studies were conducted only in Western countries and did not use the same social capital indicators. The present prospective cohort study aimed to examine the relationships between various forms of individual social capital and all-cause mortality in Japan. METHODS Self-administer...