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391.
Jennifer L. Matjasko Alana M. Vivolo-Kantor Greta M. Massetti Kristin M. Holland Melissa K. Holt Jason Dela Cruz 《Aggression and violent behavior》2012,17(6):540-552
Violence among youth is a pervasive public health problem. In order to make progress in reducing the burden of injury and mortality that result from youth violence, it is imperative to identify evidence-based programs and strategies that have a significant impact on violence. There have been many rigorous evaluations of youth violence prevention programs. However, the literature is large, and it is difficult to draw conclusions about what works across evaluations from different disciplines, contexts, and types of programs. The current study reviews the meta-analyses and systematic reviews published prior to 2009 that synthesize evaluations of youth violence prevention programs. This meta-review reports the findings from 37 meta-analyses and 15 systematic reviews; the included reviews were coded on measures of the social ecology, prevention approach, program type, and study design. A majority of the meta-analyses and systematic reviews were found to demonstrate moderate program effects. Meta-analyses yielded marginally smaller effect sizes compared to systematic reviews, and those that included programs targeting family factors showed marginally larger effects than those that did not. In addition, there are a wide range of individual/family, program, and study moderators of program effect sizes. Implications of these findings and suggestions for future research are discussed. 相似文献
392.
ABSTRACT Research has demonstrated that hacker subculture – like many other tech-oriented communities – is disproportionately composed of men. While prior attempts have been made to explain this disparity, few, if any, explore the role of subculture in this gendered divide. Drawing from feminist theories, subcultural theory, and cultural criminology, this theoretical analysis examines the intersection of gender, social structure, hegemony, situated action, and subculture to argue that hacker subculture is (1) male-dominated and androcentric, (2) mired in language, like meritocratic rhetoric, which masks inequity, and (3) conducive to forms of sexual harassment and gendered exclusion. Implications for hacking research and subcultural theory are discussed throughout. 相似文献
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Laura Holt 《Heythrop Journal》2013,54(1):101-119
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Lee Holt Jeffrey A. Gray 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1983,35(2):97-118
Previous experiments employing electrical or pharmacological induction, or instrumental reinforcement, of hippocampal theta rhythm in rats have reported subsequent performance changes in a number of learning situations. In all these studies theta induction took place either concurrent with or following the behaviour under investigation. In the present two experiments, a treatment phase of electrically-induced hippocampal theta (by septal stimulation at 7·7 Hz) preceded acquisition of a discrete trial, barpress response on a fixed ratio 5 reinforcement schedule. In one of three treatment conditions animals received electrical stimulation (1) on its own, or (2) in a classical conditioning relationship with food delivery as unconditioned stimulus, or (3) temporally uncorrelated with food delivery; controls were implanted with electrodes but not stimulated. After 15 days' acquisition of barpressing, all animals were extinguished over the subsequent 12 days. Results indicated that theta-driving stimulation, independent of any association with food, resulted in increased resistance to extinction of barpressing. In addition, conditions (1) and (3) enhanced the speed of response during early acquisition. These findings cast doubt on a “memory consolidation” hypothesis of hippocampal theta function and demonstrate a non-associative, long-lasting, proactive effect of theta induction on behaviour. 相似文献
397.
Laura A. Novak MS MPS Jessica M. LaCroix PhD Kanchana U. Perera MSc Max Stivers MA Natasha A. Schvey PhD Jeffrey L. Goodie PhD ABPP Cara Olsen PhD Tracy Sbrocco PhD David B. Goldston PhD Alyssa Soumoff MD Jennifer Weaver MD Marjan Ghahramanlou-Holloway PhD 《Suicide & life-threatening behavior》2023,53(1):75-88
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