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Robert W Motl Rod K Dishman Dianne S Ward Ruth P Saunders Marsha Dowda Gwen Felton Russell R Pate 《Health psychology》2005,24(1):106-111
The absence of longitudinal data about correlates of physical activity during adolescence has hindered the identification of key mediator variables that can be targeted by interventions. Building on the authors' previous report of a cross-sectional analysis, this study compared barriers self-efficacy and perceived behavioral control as predictors of change in 2 levels of physical activity across a 1-year period among a sample of Black and White adolescent girls (N=1,038). Self-efficacy did not predict change in either moderate or vigorous physical activity. In contrast, perceived behavioral control exhibited a longitudinal, independent relationship with change in vigorous physical activity. The authors concluded that perceived behavioral control is an independent predictor of change in vigorous physical activity levels across a 1-year period among a sample of Black and White adolescent girls and warrants study as a potential mediator variable in interventions designed to increase or maintain physical activity. 相似文献
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Geoff Ward Elizabeth A. Maylor 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》2005,58(1):98-119
Age-related deficits have been consistently observed in free recall. Recent accounts of episodic memory suggest that these deficits could result from differential patterns of rehearsal. In the present study, 20 young and 20 older adults (mean ages 21 and 72 years, respectively) were presented with lists of 20 words for immediate free recall using the overt rehearsal methodology. The young outperformed the older adults at all serial positions. There were significant age-related differences in the patterns of overt rehearsals: Young adults rehearsed a greater number of different words than did older adults, they rehearsed words to more recent serial positions, and their rehearsals were more widely distributed throughout the list. Consistent with a recency-based account of episodic memory, age deficits in free recall are largely attributable to age differences in the recency, frequency, and distribution of rehearsals. 相似文献
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Kate Ward 《The Journal of religious ethics》2014,42(2):216-242
This essay presents Augustine as a rich ethical resource on issues of wealth and poverty. Contrary to prevalent views that he had little to say on issues of economic justice, Augustine decries wealth as morally dangerous, promotes the agency of the poor in advocating for themselves with the wealthy, and supports distributive justice. Augustine envisions an interdependent Christian community where the wealthy not only help the poor, but rely on the poor to help them achieve salvation by “bearing their goods to heaven,” as Augustine describes the receipt of alms. Augustine's view of wealth's moral danger is an apt resource for ethicists interested in virtue. His insistence on poor people's moral agency and interdependence among poor and wealthy speak to pressing issues of justice in today's unequal societies. 相似文献
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Cardiovascular (CV) responses to laboratory stressors were measured in 12 pairs of identical and 21 pairs of fraternal adult male twins. For this study, blood pressure and heart rate were measured during a mental arithmetic task and the Cold Pressor Test. The analyses of cardiovascular responses to these stressors were designed to test for the presence of a genetic component in cardiovascular reactivity in an adult sample of twins aged 54-64 years. The results suggest that certain measures of cardiovascular reactivity to laboratory stressors may be heritable for both physical and psychological stressors. The possible role of this genetic component in the etiology and course of coronary heart disease is discussed. 相似文献