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271.
A survey of sex and birth control behavior of 51 male adolescents aged 15–17 was conducted utilizing a structured interview protocol. The purpose of the study was to describe male adolescent birth control behavior incorporating developmental issues, and to interpret the findings in light of what is known about female birth control behavior. Based on research with teenage females, three social influences were examined for their possible impact on male birth control behavior. A new operational definition ofmale effective birth control usage involving the effectiveness of the method and the consistency of its usage was developed. Findings similar to those obtained from research on females suggest that adolescent sexual partners may be the only direct social influence on adolescents' birth control usage. Results indicating differences from research with females suggest that in general: male birth control behavior is primarily self-oriented, males are more likely to be effective contraceptors with casual partners than with girl friends, males are more likely to communicate about sex and birth control with similar age peers than with family members and/or other adults, and that teen males view sex and birth control decisions as female decisions.He also conducts private psychotherapy, specializing in marital and family therapy. His doctorate from the University of Pennsylvania is from a unique joint program in marital/family therapy and sex education. His interests include sex roles and their impact on intimate relationships, adolescent development, and male sexuality. This article is based on his doctoral dissertation.faculty member in the Human Sexuality Program. Dr. Rose served as supervisor on Dr. Cohen's doctoral dissertation. 相似文献
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We combine evolutionary and neurobiological models to provide a theoretically rigorous framework for understanding the origin of political leadership in democratic structures and how such qualities interact with institutional incentives and constraints. Evolutionary, behavioral-genetic, neuropsychological, and physiological studies have identified biological systems related to particular types of leadership behaviors as well as the emergence of leadership itself. These biological systems emerge during specific life stages and interact with a person's life history, influencing the environments one selects into and the perception of those experiences and subsequent reactions to them; these circumstances reinforce, suppress, and inspire various leadership characteristics. Our framework provides insight into the foundational basis of leadership qualities and explains why and how we observe variation in such traits. The evolutionary functions of leadership, including approaches to collective action problems, leader–follower dynamics, institutional and organizational environments, and leader attributes are discussed, and in so doing, we propose several novel questions that can be addressed from this perspective, which suggest new and fruitful lines of research in leadership studies. 相似文献
274.
Several European countries have mandatory employee representation on company boards, but the consequences for corporate governance are debated. We use employee representation rules in the otherwise quite similar Nordic countries (Denmark, Finland, Norway, and Sweden) to elicit information on shareholder preferences for employee representation and board size. We find that shareholders tend to choose board structures that minimize the proportion of employee representatives. In Denmark and Norway employee representation depends on board size, and shareholders choose board sizes that minimize the number of employee representatives. However, many companies have more employee representatives than is mandatory. In Sweden, where the law mandates a fixed number of employee representatives (two or three depending on firm size), shareholders choose to have larger boards. In Finland, where employee representation is not mandatory, <1 % of companies choose to have it. Whatever, the merits of employee representation, shareholders appear to be mildly averse to it. 相似文献
275.
Beginning with the attack on Pearl Harbor, the war in the Pacific was a largely losing campaign for the Americans until the Battle of Midway, on 4–5 June 1942. The American ability to predict this Japanese attack the second time around served as the turning point for the war in the Pacific. And the story of how the Americans turned a catastrophic failure into an impressive cryptological achievement involved the story of one man, Joe Rochefort, convincing another man, Admiral Chester Nimitz who commanded the Pacific Fleet, that he could trust his analysis of the intelligence he compiled and analyzed. 相似文献
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