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AliceAnn Crandall Brianna M. Magnusson M. Lelinneth B. Novilla 《Journal of youth and adolescence》2018,47(4):793-806
Adolescent self-regulation is increasingly seen as an important predictor of sexual risk-taking behaviors, but little is understood about how changes in self-regulation affect later sexual risk-taking. Family financial stress may affect the development of self-regulation and later engagement in sexual risk-taking. We examined whether family financial stress influences self-regulation in early adolescence (age 13) and growth in self-regulation throughout adolescence (from age 13–17 years). We then assessed the effects of family financial stress, baseline self-regulation, and the development of self-regulation on adolescent sexual risk-taking behaviors at age 18 years. Using a curve-of-factors model, we examined these relationships in a 6-year longitudinal study of 470 adolescents (52% female) and their parents from a large northwestern city in the United States. Results indicated that family financial stress was negatively associated with baseline self-regulation but not with growth in self-regulation throughout adolescence. Both baseline self-regulation and growth in self-regulation were predictive of decreased likelihood of engaging in sexual risk-taking. Family financial stress was not predictive of later sexual risk-taking. Intervening to support the development of self-regulation in adolescence may be especially protective against later sexual risk-taking. 相似文献
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Warren Magnusson 《Canadian public administration. Administration publique du Canada》1985,28(4):575-599
Studies of government at the local level tend to be focused on the municipalities. To understand the full range of institutions at this level, a broader conception of the “local state” is required. The latter refers to the state in so far as it is present in and concerned with the local community, and thus it encompasses local agencies of the central state as well as local governments. To conceive of the local state in this way allows for a critical assessment of competing theories of local government in Canada. The latter describe local institutions variously as the third order of government, agencies for special purposes, the local public economy, or local apparatuses of the state. All but the first draw attention to non-municipal agencies at the local level, but none give an adequate account of the structure and functions of the local state as a whole. What is required is a theory that takes the pressure for local self-government seriously, and is sensitive to both geographical variation and historical change. 相似文献
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J. Bertilsson U. Petersson P. J. Fredriksson M. Magnusson P. A. Fransson 《Police Practice and Research》2017,18(4):391-406
Pepper spray (OC) is a policing tool aimed to prevent or stop aggressive behavior by quickly and temporarily incapacitate without injuring. To date, few studies have investigated OC’s operational usefulness and limitations. OC reduced violent behavior in 93% of the 936 incidents investigated. However, the operative range was often <2 m and it took between 3 and 5 s of spraying before obtaining effect, partly owing to the difficulties of hitting a small, sometimes erratically moving target. Collateral hits were noted in 24% of the incidents, whereof 90% were other officers. Noteworthy, in 21% of incidents officers put themselves at large personal risk by using OC at close range against people armed with lethal weapons. Hence, OC emerges as a suitable tool for handling low threat situations but lacks key traits to ensure safe and efficient policing of high threat situations, e.g., handling armed assailants. 相似文献
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In the present study, the relationship between biological maturation (skeletal growth) in adolescence and the development of drinking habits and alcohol abuse were studied for a representative group of Swedish males. The results showed that early maturers and late maturers had more advanced drinking habits at age 14 as compared to their normally maturing same-aged peers (p<.05).This difference was not significant 1 1/2 years later. In young adulthood more than one third (36%) of the late maturers were registered for alcohol abuse as compared to 14% of the normal maturers and 8% of the early maturers (p=.12).The relevance of psychosocial factors as mediating the relationship between biology and actual behavior was discussed. It was emphasized that differences in biological and psychosocial maturity should be taken into consideration when studying adolescent behavior, both in cross-sectional and in longitudinal perspectives.This study was supported by funds from the Swedish Council for Planing and Coordination of Research, the Committee for Social Research, and the Bank of Sweden Tercentenary Foundation.Received Ph.D. from University of Stockholm 1988. Current research interest is the development of drinking habits and alcohol abuse.Current research interest is human development. 相似文献
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The development of financial institutions has been viewed in recent years as critical to the economic development process. This research uses recent data from the eight largest African stock markets to test whether these markets meet the criterion of weak-form stock market efficiency with returns characterised by a random walk. Results are then compared with similar tests on emerging stock markets in South-east Asia and Latin America. Conclusions from the research indicate that test results for weak-form efficiency in the emerging African stock markets compare favourably with those performed on other emerging stock markets. 相似文献
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Daniel K. Jonsson Malin Östensson Karl Henrik Dreborg Roger Magnusson 《European Security》2013,22(1):33-54
Abstract The competition for energy resources, as well as the closely related climate change problems, imply a number of global security consequences. A methodology to include energy aspects in long-term defence planning, based on broad civilian scenario approaches, is proposed. The study has been carried out by the Swedish Defence Research Agency, as commissioned by the Swedish Armed Forces, resulting in a number of future mission scenarios highlighting e.g. new challanges and tasks, as well as the need for new capabilities and equipment. 相似文献