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851.
The authors used social marketing to design and test advertisement components aimed at increasing students' interest in attending an alcohol program focused on reaching students who drink heavily, although the authors offered no such program. Participants were undergraduate students in introductory psychology courses (N = 551). Questionnaires included measures assessing demographic information, alcohol use and negative consequences, and interest in attending an alcohol program in response to exposure to 1 of 12 systematically varied advertisements. The authors found that approximately 20% of participants across all ad types indicated some level of interest in attending the alcohol program. Students who use alcohol reported more interest in attending when an informational message was used. Of the participants offered food, 41.9% indicated the food offered in the advertisement impacted their interest in attending. Results suggest market segmentation plays a role in developing effective advertisements to recruit different groups of students based on their reported drinking behavior. 相似文献
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Mary C. Meyer 《Revue canadienne de statistique》2012,40(1):190-206
The penalized spline is a popular method for function estimation when the assumption of “smoothness” is valid. In this paper, methods for estimation and inference are proposed using penalized splines under additional constraints of shape, such as monotonicity or convexity. The constrained penalized spline estimator is shown to have the same convergence rates as the corresponding unconstrained penalized spline, although in practice the squared error loss is typically smaller for the constrained versions. The penalty parameter may be chosen with generalized cross‐validation, which also provides a method for determining if the shape restrictions hold. The method is not a formal hypothesis test, but is shown to have nice large‐sample properties, and simulations show that it compares well with existing tests for monotonicity. Extensions to the partial linear model, the generalized regression model, and the varying coefficient model are given, and examples demonstrate the utility of the methods. The Canadian Journal of Statistics 40: 190–206; 2012 © 2012 Statistical Society of Canada 相似文献
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Sean T. Hannah Mary Uhl-Bien Bruce J. Avolio Fabrice L. Cavarretta 《The Leadership Quarterly》2009,20(6):897-919
In this review, we develop a framework to guide future research and to examine the execution of leadership in extreme contexts. We start by defining and distinguishing extreme contexts from crisis and other contexts. A five component typology is developed comprised of magnitude of consequences, form of threat, probability of consequences, location in time and physical or psychological–social proximity. We discuss the unique influences these components have on leadership processes in extreme contexts examining the relevance of organization types such as critical action and high reliability organizations. Further, we present a set of factors that may attenuate or intensify the dimensions comprising an extreme context, thus influencing either a team or organization's ability for adaptive leadership response. Ultimately this framework seeks to develop a richer understanding of extreme contexts to advance the future development of contextualized theories of leadership for extreme contexts. 相似文献
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Mary Frank Fox 《The American Sociologist》1990,21(1):67-71
This article argues that the disciplinary context is the locus of illegitimate—fraudulent and deviant—as well as legitimate
activity in science and scholarship. It discusses the structural features of disciplines that condition variation in rates
and types of malpractice. These features include levels of: research activity, replication and replicability, coauthorship,
locus of creativity in publication (compared to the research process), and intellectual fragmentation.
Her current work is a study of research productivity, funded by The National Science Foundation. She is a member of the publication
committee of The American Sociological Association and past publication chair of The Society For Social Studies of Science.
She is an associate editor ofGender and Society and editorial board member ofWork and Occupations. 相似文献
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Some people are prepared to take high risks with their lives and those of others. Should this be surprising? Is it more normal to be risk-taking? Or risk averse? The argument below will be that the risk taking facet and the risk-averse facet of the personality each emerges in the course of a public debate on freedom and control. It is not psychology but anthropology that shows how the community forces sharp and clear ideas about the self upon its members. 相似文献