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71.
Physical activity may promote cognitive health in older adults. Popular media play an important role in preventive health communication. This study examined articles discussing associations between physical activity and cognitive health in top-circulating magazines targeting older adults. 42,753 pages of magazines published from 2006 to 2008 were reviewed; 26 articles met inclusion criteria. Explanations regarding the link between physical activity and cognitive health were provided in 57.7% of articles. These explanations were generally consistent with empirical evidence; however, few articles included empirical evidence. Physical activity recommendations were presented in 80.8% of articles; a wide range was recommended (90-300 min of physical activity per wk). Socioeconomic status and education level were not mentioned in the text. Results suggest an opportunity for greater coverage regarding the role of physical activity in promoting cognitive health in popular media. Magazine content would benefit from including more empirical evidence, culturally sensitive content, and physical activity recommendations that are consistent with U.S. guidelines.  相似文献   
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Building on Preston and Campbell's two-sex model of intergenerational transmission, this article provides a theoretical analysis of the dynamics of the racial distribution in black-white-mulatto systems. The author shows that "bounded" patterns of racial classification and switching imply long-run racial homogeneity in the absence of differential reproduction. Beyond the theoretical analysis, the author attempts to account for the dramatic growth of the white population share in Puerto Rico in the early 20th century. Because the effects of racial classification and differential reproduction were roughly offsetting, the observed growth of the white share can be attributed almost entirely to racial switching.  相似文献   
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AFTER SUICIDE     
This piece was written in the immediate aftermath of a suicide, and explores themes of mourning, melancholia, and a search for meaning.  相似文献   
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Montgomery P, Lilly J. Systematic reviews of the effects of preparatory courses on university entrance examinations in high school‐age students This systematic review examines the effects of coaching on Scholastic Assessment Test (SAT) scores and, ultimately, university entrance. We show a significant effect in score improvement for coached students over their uncoached peers in both the Math and Verbal subtests of the examination. This review's findings indicate treatment group gains over control group of 23.5 points on the Verbal subtest and 32.7 points on the Math subtest, for a combined score of nearly triple that which was previously assumed. As long as coaching remains inaccessible to some students, we urge universities to reconsider the weight given to SAT scores in the undergraduate admissions process. We challenge the designers of the SAT to redesign the examination to eliminate the possibility of score gains from coaching. Finally, we call for researchers to increase the production of high‐quality data in this field to ensure accurate estimates of coaching's effects are made available to all.  相似文献   
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This article describes the results of a qualitative case study evaluating a research mentorship program in community care settings in Ontario, Canada. The purpose of the program was to build evaluation and research capacity among staff of community care agencies through a mentorship program. Data were collected through in-depth, semi-structured interviews, focus group interviews, and written evaluations. Three themes were identified: taking hold, fostering hold, and holding on. Mentees took hold of new evaluation and research skills. Factors fostering hold included positive mentoring relationships and participation in relevant research projects. Mentees struggled to hold on to, and apply their skills within a community care context of challenges such as constrained resources and a mandate to provide client-centered care. The lessons learned include having trainees participate in relevant, time-limited evaluation and research projects, and early implementation of mechanisms to sustain integration of trainees' knowledge and skills within community care agencies.  相似文献   
79.
Career decision-making is a critical task for high school students, yet little is known about how career interventions affect their decision-making skills and self-efficacy. We investigated the outcome of a career intervention in a Chinese high school setting to determine whether it would reduce the difficulties students faced in making a career decision and elevate their self-efficacy in career exploration. A career intervention course was delivered to 413 high school students (228 female, 185 male) who completed a demographic questionnaire, the Major Decision-Making Self-Efficacy Scale (Peng & Long, 2003), and the Career Decision-Making Difficulties Questionnaire–Chinese Version (Shen, 2005) before and after the intervention. Results indicated that the intervention had a positive impact on reducing students' difficulties making career decisions but had mixed results on career self-efficacy. Proactive, systematic, multilevel, and structured interventions over longer periods of time would likely help youth develop their career decision-making skills.  相似文献   
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Preferences and practices related to the vaginal condition have implications for the use of vaginal HIV prevention products. The authors used qualitative methods to explore narratives relating to the vaginal state amongst women in South Africa, Uganda, and Zimbabwe who had previously participated in a biomedical HIV prevention trial. They investigated women's behaviors related to optimizing the vaginal state, experiences and perceptions of the gel's effect on the vaginal state and on penile-vaginal intercourse, women's narratives on male partner perceptions, and how preferences relating to the vaginal state may have interfered with gel use.  相似文献   
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