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991.
992.
Orphans in Africa: parental death,poverty, and school enrollment 总被引:2,自引:0,他引:2
We examine the impact of orphanhood on children's school enrollment in 10 sub-Saharan African countries. Although poorer children in Africa are less likely to attend school, the lower enrollment of orphans is not accounted for solely by their poverty. We find that orphans are less likely to be enrolled than are nonorphans with whom they live. Consistent with Hamilton's rule, the theory that the closeness of biological ties governs altruistic behavior, outcomes for orphans depend on the relatedness of orphans to their household heads. The lower enrollment of orphans is largely explained by the greater tendency of orphans to live with distant relatives or unrelated caregivers. 相似文献
993.
The purpose of this study was to investigate the influences of age and gender on the driving patterns of 300 older adults. Odds of driving less than every day increased significantly with age and female gender. However, no differences were found in the reduction of overall driving. Females were more likely than men to have stopped or reduced driving under certain adverse conditions and for elective purposes. The driving patterns of today's cohort of older females suggest that the gender gap may be narrowing. Social and cultural issues such as security, safety, and identity with driving may explain existing gender differences. 相似文献
994.
For slightly more than a century, psychologists, sociologists, demographers, and others have been studying family structure. The enterprise has been repeatedly characterized as having strong empirical roots, but little theory to nurture it and help it develop. Recently, articles have been published calling for the formalization of family demography, which we define as the discipline devoted to the study of family structure. This paper has the following purposes: (1) To develop a general taxonomy of family structure that unites researchers from several disciplines under one framework; (2) To review important methodological and measurement problems involved in the study of family structure; and (3) To review the recent theory-based empirical literature. We conclude with an assessment of the state-of-the-enterprise.This research was supported in part by a junior faculty research fellowship from the University of Oklahoma to the first author. The Carolina Population Center and the University of North Carolina Department of Psychology provided research and library assistance. Special thanks are extended to Thomas Berndt, George Holden, J. Richard Udry, and several anonymous reviewers who read and commented on earlier drafts of this article. 相似文献
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997.
Janz NK Dodge JA Janevic MR Lin X Donaldson AE Clark NM 《Journal of women & aging》2004,16(3-4):19-38
Stress and psychological distress were assessed in 457 older women who were subsequently randomized to a six-week heart disease management program ("Women take PRIDE") or to a "usual care" control group. Baseline distress was significantly associated with age, symptoms, physical functioning, social support, optimism, and self-esteem (p < .05). Only 20% of women reported their physician had recommended reducing stress. At four months follow-up, intervention women compared to controls were significantly more likely to report reductions in stress levels (p = 0.02) and also showed improvement in emotional behavior (p = 0.09). 相似文献
998.
Catherine Mary Marquette 《Population and environment》2006,27(5-6):397-444
Because of urgent concerns to protect tropical forests in Latin America, social science research on them has been generally ‘forest-centred.’ This forest-centred approach considers the people who inhabit the frontier as agents of land use change and forest conversion focusing on how their actions affect forest cover. Welfare indicators for forest frontier populations (income, education, health, access to basic services) are addressed only incidentally in terms of how they influence land use. ‘People’ centred research, which asks questions from the perspective of human welfare such as, ‘Are frontier settlers better off than they were before?’ or ‘What kind of socio-economic impacts does frontier life have on the people who live there?” and “How can their lives be improved?,” has been less common. As a result, we know much about the impacts, especially adverse impacts, which settler activity on the frontier has on forest cover but little about the impacts settlement has on settlers, themselves. This paper attempts to shift discussion towards these kinds of questions and a more people centred approach by reviewing existing research that directly addresses the welfare of settlers in tropical forest frontiers in Latin America. We also review research that touches on settler welfare by considering the concept of ‘sustainability’ on the forest frontier and stakes out a comprise position between ‘forest’ and ‘people’ centred questions or concerns. Settler welfare is defined primarily in economic terms. Household income, wealth, and agricultural productivity are interpreted a proxies for welfare in most cases. We also consider welfare in terms of access to basic services (health and education) and living conditions. We particularly consider how settler welfare indicators may change over time on the frontier. Tropical forests, defined as tropical, moist, broadleaf forests, are the main ecological setting of interest. These forests are generally the largest unoccupied areas in many Latin American countries and are thus, also the main ‘agricultural frontier’ or areas of new settlement by small farmers. 相似文献
999.
Joseph P. Romano Azeem M. Shaikh Michael Wolf 《Econometrica : journal of the Econometric Society》2014,82(5):1979-2002
This paper considers the problem of testing a finite number of moment inequalities. We propose a two‐step approach. In the first step, a confidence region for the moments is constructed. In the second step, this set is used to provide information about which moments are “negative.” A Bonferonni‐type correction is used to account for the fact that, with some probability, the moments may not lie in the confidence region. It is shown that the test controls size uniformly over a large class of distributions for the observed data. An important feature of the proposal is that it remains computationally feasible, even when the number of moments is large. The finite‐sample properties of the procedure are examined via a simulation study, which demonstrates, among other things, that the proposal remains competitive with existing procedures while being computationally more attractive. 相似文献
1000.
Mary D. Sass Matthew A. Liao‐Troth Bruce D. Wonder 《Nonprofit management & leadership》2011,22(2):199-216
This article empirically examines the relationship between the trait of equity sensitivity and employment sector (for‐profit, public, and nonprofit) for senior executives. By controlling for industry (healthcare), we show a relationship between this trait and employment sector in both a single‐state survey and a multistate survey. Findings indicate that benevolents have a propensity to pursue nonprofit positions whereas entitleds are likely to gravitate toward for‐profit positions. Implications for job seekers, employers, and academics are provided. 相似文献