Factors associated with transitional shifts in college students' physical activity behavior   总被引：1，自引：0，他引：1  

Levy SS  Cardinal BJ 《Research quarterly for exercise and sport》2006,77(4):476-485

The Transtheoretical Model (Prochaska & Marcus, 1994) has been widely used as a framework for understanding exercise behavior change. The purpose of this study was to clarify equivocal research findings reported for model predictions when examining stage movement over time rather than static stages and to provide some evidence of the construct validity of transitional stages. Participants were female (n = 285) and male (n = 243) undergraduates (M age = 19.9 years, SD = 2.7) who completed previously validated questionnaires twice, separated by 9 weeks, that assessed stage of change, exercise behavior, processes of change, pros and cons of exercise, and exercise self-efficacy. Participants were classified into one of five transitional shift groups based on their responses at baseline and follow up: (a) stable sedentary, (b) stable active, (c) activity adopters, (d) activity relapsers, and (e) perpetual preparers. Results of a 5 (group) x 2 (time) repeated measures (RM) analysis of variance (ANOVA) examining exercise behavior revealed a significant interaction (p < .001) and supported transitional stage classification, with activity adopters and stable actives increasing exercise over time and relapsers decreasing activity. Separate 5 (group) x 2 (time) RM ANOVAs examining model constructs revealed no significant interaction for cognitive processes of change; however, activity adopters and stable actives reported significant (p < .01) increases in the use of behavioral processes over time, while only the activity relapsers and perpetual preparers reported decreases. Activity relapsers also reported significant (p < .05) decreases in the pros of exercise. No significant interactions were found for the cons of exercise behavior. Unlike findings reported in cross-sectional studies, increases in self-efficacy did not accompany increases in exercise stage. The findings strongly support examination of stage movement classifications rather than static stages, as these transitions provide greater insight into the mechanisms of exercise behavior change.  相似文献   

Interpreting Probabilistic Classifications From Diagnostic Psychometric Models     

Laine Bradshaw  Roy Levy 《Educational Measurement》2019,38(2):79-88

Although much research has been conducted on the psychometric properties of cognitive diagnostic models, they are only recently being used in operational settings to provide results to examinees and other stakeholders. Using this newer class of models in practice comes with a fresh challenge for diagnostic assessment developers: effectively reporting results and supporting end users to accurately interpret results. Achieving the goal of communicating results in a way that leads users of the assessment to make accurate interpretations requires a prerequisite step that cannot be taken for granted. The assessment developers must first accurately interpret results from a psychometric, or measurement, standpoint. Through this article, we seek to begin a discussion about reasonable interpretations of the results that classification‐based models provide about examinees. Interpretations from published research and ongoing practice show different—and sometimes conflicting—ways to interpret these results. This article seeks to formalize a comparison, critique, and discussion among the interpretations. Before beginning this discussion, we first present background on the results provided by classification‐based models regarding the examinees. We then structure our discussion around key questions an assessment development team needs to answer themselves prior to constructing reports and interpretative guides for end users of the assessment.  相似文献   

Bayesian Data-Model Fit Assessment for Structural Equation Modeling     

Roy Levy 《Structural equation modeling》2013,20(4):663-685

Bayesian approaches to modeling are receiving an increasing amount of attention in the areas of model construction and estimation in factor analysis, structural equation modeling (SEM), and related latent variable models. However, model diagnostics and model criticism remain relatively understudied aspects of Bayesian SEM. This article describes and illustrates key features of Bayesian approaches to model diagnostics and assessing data–model fit of structural equation models, discussing their merits relative to traditional procedures.  相似文献   

Insights and Conflicts in Discussing Recursion: A Case Study   总被引：1，自引：1，他引：0  

Dalit Levy 《Computer Science Education》2013,23(4):305-322

Recursion is a significant concept, appearing in almost every introductory course in Computer Science (CS). CS educators and educational researchers often refer to difficulties in learning and teaching recursion. However, the research literature barely addresses the unique ways in which students relate to this interdisciplinary concept and the particular learners’ language concerning recursive phenomena. The gap is most apparent when seen through a constructivist lens, where the students’ prior knowledge and idiosyncratic conceptions should be referred to and reflected upon in order to serve as a basis for further knowledge construction. This paper reports on a study in which a collaborative classification of several recursive phenomena are used to facilitate the construction of recursion. The student discourse was recorded and analyzed, and a grounded categorical system was formed and examined. Preliminary results indicate some basic aspects of recursion in the student discourse, although the students apparently talk a very different language from that of the experts. Some ‘potentially rich’ discourse episodes were evident as well, representing conflicts among alternative conceptions. Such episodes can serve as a springboard for further learning.  相似文献   

Stressors,coping, and coping effectiveness: Gender,type of sport,and skill differences     

Adam R. Nicholls  Remco Polman  Andrew R. Levy  Jamie Taylor  Stephen Cobley 《Journal of sports sciences》2013,31(13):1521-1530

Abstract

The aim of this study was to examine stressors, coping, and coping effectiveness as a function of gender, type of sport, and skill. The sample consisted of 749 undergraduate athletes (455 males, 294 females) aged 18 – 38 years (mean = 19.8 years). Skill was classified as international/national, county, university, and club standard. Participants completed a stressor and coping concept map (Novak & Gowin, 1984 Novak, J. D. and Gowin, D. B. 1984. Learning how to learn, Cambridge: Cambridge University Press. [Crossref] , [Google Scholar]). The results revealed gender, type of sport, and skill differences in relation to stressor frequencies, coping strategy deployment, and coping effectiveness. In contrast to previous research, females used a variety of problem-focused (e.g. planning, communication, technique-orientated coping) strategies more frequently than males. Team sport athletes reported a variety of sport-specific stressors relating to the demands of playing in a team environment. The group of national/international athletes reported using more planning, blocking, and visualization, and also reported that their coping was more effective than that of less-skilled athletes.  相似文献   

Factors Associated With Transitional Shifts in College Students' Physical Activity Behavior     

Susan S. Levy  Bradley J. Cardinal 《Research quarterly for exercise and sport》2013,84(4):476-485

The Transtheoretical Model (Prochaska & Marcus, 1994) has been widely used as a framework for understanding exercise behavior change. The purpose of this study was to clarify equivocal research findings reported for model predictions when examining stage movement over time rather than static stages and to provide some evidence of the construct validity of transitional stages. Participants were female (n = 285) and male (n = 243) undergraduates (M age = 19.9 years, SD = 2.7) who completed previously validated questionnaires twice, separated by 9 weeks, that assessed stage of change, exercise behavior, processes of change, pros and cons of exercise, and exercise self-efficacy. Participants were classified into one of five transitional shift groups based on their responses at baseline and follow up: (a) stable sedentary, (b) stable active, (c) activity adopters, (d) activity relapsers, and (e) perpetual preparers. Results of a 5 (group) x 2 (time) repeated measures (RM) analysis of variance (ANOVA) examining exercise behavior revealed a significant interaction (p < .001) and supported transitional stage classification, with activity adopters and stable actives increasing exercise over time and relapsers decreasing activity. Separate 5 (group) x 2 (time) RM ANOVAs examining model constructs revealed no significant interaction for cognitive processes of change; however, activity adopters and stable actives reported significant (p < .01) increases in the use of behavioral processes over time, while only the activity relapsers and perpetual preparers reported decreases. Activity relapsers also reported significant (p < .05) decreases in the pros of exercise. No significant interactions were found for the cons of exercise behavior. Unlike findings reported in cross-sectional studies, increases in self-efficacy did not accompany increases in exercise stage. The findings strongly support examination of stage movement classifications rather than static stages, as these transitions provide greater insight into the mechanisms of exercise behavior change.  相似文献   

Sharing MedlinePlus®/MEDLINE® for information literacy education (SMILE): a dental public health information project     

Gaines JK  Levy LS  Cogdill KW 《Medical reference services quarterly》2011,30(4):357-364

The SMILE project represented a partnership among the University of Texas Health Science Center at San Antonio Libraries, the Gateway Clinic in Laredo, and the San Antonio Metropolitan Health District. The project focused on improving dental practitioners' access to reliable information resources and integrating the best evidence into public health dental practice. Through its training program, SMILE cultivated a set of "power information users" among the dentists, dental hygienists, and community health workers (promotores) who provided public health preventive care and oral health education. The dental public health practitioners gained information literacy skills and increased their knowledge about reliable sites such as blogs, PubMed?, and MedlinePlus?. This project fostered opportunities for expanded partnerships with public health personnel.  相似文献   

Arjo Klamer (ed.), The Value of Culture: On the Relationship between Economics and Arts     

David M. Levy 《Journal of Cultural Economics》1998,22(1):63-65

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Bilingualism,federal policy on bilingual education and intercultural relations     

Jack Levy 《Int J Intercult Relat》1985,9(2):113-130

Bilingualism, or facility in two languages, is one of the most powerful tools employed in cross-cultural communication. Its effect is far greater than the simple improvement of understanding between two groups. Rather, bilingualism is a complex concept with demographic, socioeconomic, and political overtones. Though not always the case in the past, most governments are now sensitive to the questions surrounding bilingualism and are aware of the consequences of misguided policies. This paper discusses the background of bilingualism and bilingual education both within and outside of the United States. It presents an analysis of current federal government policy toward bilingual education and the implications for intercultural relations in the United States. These implications are discussed in terms of language use, education, employment, equal opportunity, politics, and international relations.  相似文献   

Questions at the Exhibition     

Yehuda Levy‐Aldema 《Curator: The Museum Journal》2011,54(3):279-291

Abstract In this article the author describes the process and framework behind the experience of developing a “Legitimate Visual Question Exhibition.” We start with the assumption that a museum has a responsibility to challenge and provoke its visitors and help them create new meanings, thus transcending the traditional model of information transfer. A Legitimate Visual Question Exhibition can effectively accomplish this. It approaches the task through installations of familiar subjects and stories presented in a manner that provokes questions that aren’t easily answered by cause‐and‐effect explanations. Several examples from a cultural museum in Israel are used to illustrate the philosophy and approach.  相似文献