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When women are scarce in a population relative to men, they have greater bargaining power in romantic relationships and thus may be able to secure male commitment at earlier ages. Male motivation for long-term relationship commitment may also be higher, in conjunction with the motivation to secure a prospective partner before another male retains her. However, men may also need to acquire greater social status and resources to be considered marriageable. This could increase the variance in male marital age, as well as the average male marital age. We calculated the Operational Sex Ratio, and means, medians, and standard deviations in marital ages for women and men for the 50 largest Metropolitan Statistical Areas in the United States with 2000 U.S Census data. As predicted, where women are scarce they marry earlier on average. However, there was no significant relationship with mean male marital ages. The variance in male marital age increased with higher female scarcity, contrasting with a non-significant inverse trend for female marital age variation. These findings advance the understanding of the relationship between the OSR and marital patterns. We believe that these results are best accounted for by sex specific attributes of reproductive value and associated mate selection criteria, demonstrating the power of an evolutionary framework for understanding human relationships and demographic patterns. 相似文献
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Greg Carey 《Teaching Theology & Religion》2006,9(3):198-199
Books reviewed: Alternative Strategies for Evaluating Student Learning. Edited by Michelle V. Achacoso and Marilla D. Svinicki. New Directions for Teaching and Learning, No. 100. San Francisco: Jossey‐Bass Publishers, 2004. 122 pages. ISBN 0‐7879‐7970‐8. $29.00. 相似文献
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Freda Carey 《The Ecumenical review》2012,64(2):160-168
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Matthew R. Sanders James N. Kirby John W. Toumbourou Timothy A. Carey Sophie S. Havighurst 《Australian psychologist》2020,55(2):91-101
Psychology and the social sciences have an important role to play in developing innovative solutions to pressing global mental health and social problems. Programs developed by psychologists and other social scientists have immense potential to alleviate suffering and to promote healthy human development across the lifespan. In order to realise this potential program developers must manage the research and development challenges involved in testing an intervention, evaluating, and then preparing it for wider dissemination and scaling. Particular challenges and conflicts can occur in managing the joint roles of being a program developer and a researcher evaluating an intervention or innovation. This article examines the management of various forms of conflicts of interest that have the potential to produce bias and decrease the confidence of policy makers, funders, practitioners, fellow researchers, and the public in the value of psychological interventions. We argue that best practice guidelines are needed to assist developers negotiate the predictable, sometime unavoidable but challenging conflicts of interest that arise in the research process. 相似文献
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