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941.
942.
Linda S. Pagani Frank Vitaro Richard E. Tremblay Pierre McDuff Christa Japel Simon Larose 《The Journal of social issues》2008,64(1):175-194
This study examines childhood variables that tend to deflect life-course trajectories away from finishing high school. We examined unexpectedly graduating in the presence of three empirical risk factors (having a mother that did not finish high school, being from a single-parent family in early childhood, and having repeated a grade in primary school) and unexpectedly not graduating in the absence these same factors (low risk). The comparison groups comprised individuals who expectedly did not graduate (first case) and expectedly graduated (second case). We found that having experienced all three factors practically guaranteed not finishing high school, thus defining a crystal clear target group for policy. Without screening, intervention, and follow-up, individuals facing such cumulative risk are most unlikely to graduate. We also found a group of males and females that did not finish high school despite not having these three risk factors. These missed estimates become nontrivial once they are translated into a population-level statistic of lost human capital investments. Specific family and individual factors helped explain the unexpected life course toward not finishing high school, especially for low-risk males and females. Our results suggest policies that support childhood screening for attention-related difficulties and helping parents better understand supervision during adolescence . 相似文献
943.
Hageman PA Walker SN Pullen CH Boeckner LS Oberdorfer MK 《Journal of aging and physical activity》2005,13(3):327-342
This study investigated physical activity and fitness of midlife and older rural women. Random-digit dialing was used to recruit 225 women (57.9 +/- 5.6 years old). Self-reported activity (moderate activity, flexibility, and strength) and fitness (body composition, flexibility, strength, and estimated VO(2max)) were assessed. The women demonstrated low daily energy expenditure (30.74 +/- 10.63 kcal x kg(-1) x day(-1)) and estimated VO(2max) (20.12 +/- 7.81 ml x kg(-1) x min(-1)), with 51.5% reporting fair or poor health. Few women reported meeting Healthy People 2010 targets for moderate activity (43.1%), flexibility (28.9%), or strength )14.2%). When classified by estimated VO(2max) into three categories, differences were observed for body-mass index, percent body fat, sit and reach, and timed chair stands, with the poorest performance by those with low cardiorespiratory fitness. Adherence to Healthy People 2010 targets for moderate activity and strengthening was associated with higher cardiorespiratory fitness. These rural women are targets for physical activity interventions because of their sedentary behaviors and low cardiorespiratory fitness. 相似文献
944.
Fried LP Hadley EC Walston JD Newman AB Newman A Guralnik JM Studenski S Harris TB Ershler WB Ferrucci L 《Science of aging knowledge environment : SAGE KE》2005,2005(31):pe24
The American Geriatrics Society sponsored a working conference in January 2004, funded by the National Institute on Aging, to establish the state of the art in frailty research and to set a research agenda for the future. The invited participants included senior basic biologists, epidemiologists, geneticists, and clinical investigators who study aging-related issues. This article summarizes the central theoretical observations on frailty and research needs and opportunities presented and discussed at this conference, and lays out an agenda for future research on frailty. 相似文献
945.
This article presents preliminary evaluation findings from Parent Party Patrol (PPP). PPP is a two-hour single-session intervention that provides information to parents about ways to increase monitoring and improve communication and family guidelines regarding substance use, with the goal of reducing adolescent involvement in unsupervised activities and associated substance use. Seventy-three attendees from 15 PPP sessions completed baseline and three- to six-month follow-up information. At follow-up, participants showed significantly increased awareness of adolescent substance use and unchaperoned activities, improved communication and use of family guidelines regarding substance use, and increased monitoring of their children's activities. A significant reduction in adolescent attendance at unchaperoned parties was also reported. Replication of the study with a larger, more representative sample and controlled design is suggested. As adolescent substance use is a multidetermined problem, PPP may be best viewed as one part of a broader comprehensive substance abuse prevention program. 相似文献
946.
947.
Youth conferences can be effective means for engaging youth in the life of their schools, communities, and nation, bringing benefits not only to youth themselves but also to the community, which gains through the energy, ideas, and values that youth contribute. 相似文献
948.
Abstract. Statistical inference for exponential inhomogeneous Markov point processes by transformation is discussed. It is argued that the inhomogeneity parameter can be estimated, using a partial likelihood based on an inhomogeneous Poisson point process. The inhomogeneity parameter can thereby be estimated without taking the interaction into account, which simplifies the statistical analysis considerably. Data analysis and simulation experiments support the results. 相似文献
949.
Ethical leadership: A review and future directions 总被引:9,自引:0,他引:9
Our literature review focuses on the emerging construct of ethical leadership and compares this construct with related concepts that share a common concern for a moral dimension of leadership (e.g., spiritual, authentic, and transformational leadership). Drawing broadly from the intersection of the ethics and leadership literatures, we offer propositions about the antecedents and outcomes of ethical leadership. We also identify issues and questions to be addressed in the future and discuss their implications for research and practice. Our review indicates that ethical leadership remains largely unexplored, offering researchers opportunities for new discoveries and leaders opportunities to improve their effectiveness. 相似文献
950.
Linda Trudeau Catherine Lillehoj Richard Spoth Cleve Redmond 《Journal of research on adolescence》2003,13(3):301-328
This study examined the mediating processes linking assertiveness and decision making to early adolescent substance initiation, along with the moderating effect of gender on those processes. Models specifying negative expectancies and refusal intentions as mediators of individual rights assertiveness and decision‐making effects on substance initiation were evaluated across 18 months on a nontreatment cohort of young adolescents participating in a prevention trial (average age 12.3 years at baseline; N=357). Results indicated that individual rights assertiveness and decision making had indirect effects on substance initiation through effects on negative outcome expectancies and refusal intentions. Gender differences were found in both the average level and the pattern of relationships among the variables. For girls, refusal intentions were negatively associated with later substance initiation. For boys, early levels of substance initiation were negatively associated with later levels of negative expectancies and refusal intentions. Implications for prevention programming are discussed. 相似文献