Characteristics of social smoking among college students

Social smoking is a newly identified phenomenon in the young adult population that is poorly understood. We investigated differences in social smoking (smoking most commonly while partying or socializing) and other smoking within a convenience sample of college smokers (n = 351) from a large midwestern university. Results revealed that 70% of 351 current (past 30-day) smokers reported social smoking. No significant difference was found in motivation to quit between smoking groups. However, a significant difference was found between groups in confidence to quit, the number of days smoked, and the number of cigarettes smoked on those days. More social smokers than expected did not perceive themselves as smokers. Logistic regression analysis revealed that lower physical and psychological dependence and higher social support scores predicted social smoking.     

Ordering and selecting components in multivariate or functional data linear prediction

Summary.  The problem of component choice in regression-based prediction has a long history. The main cases where important choices must be made are functional data analysis, and problems in which the explanatory variables are relatively high dimensional vectors. Indeed, principal component analysis has become the basis for methods for functional linear regression. In this context the number of components can also be interpreted as a smoothing parameter, and so the viewpoint is a little different from that for standard linear regression. However, arguments for and against conventional component choice methods are relevant to both settings and have received significant recent attention. We give a theoretical argument, which is applicable in a wide variety of settings, justifying the conventional approach. Although our result is of minimax type, it is not asymptotic in nature; it holds for each sample size. Motivated by the insight that is gained from this analysis, we give theoretical and numerical justification for cross-validation choice of the number of components that is used for prediction. In particular we show that cross-validation leads to asymptotic minimization of mean summed squared error, in settings which include functional data analysis.     

From the Editor

Sociological Forum -     

The threat of unionism and wage-coverage effects

This study finds that the union/nonunion wage differential decreases with local labor-market coverage. In general, SMSA coverage has a negligible impact on union wages, and nonunion wages increase significantly with coverage. This is consistent with strong threat effects operating at the local labor-market level. As with most other wage-coverage studies, however, union wages increase more quickly with industry coverage than do nonunion wages. These results support the argument that distinctly different economic processes underlie local labormarket and industry-coverage effects. Economies in the provision of union services imply that union threat effects will be most salient at the local labor-market level. Industry wage-coverage relationships are dominated by the positive effect of product-market coverage on union bargaining power. Estimated coverage effects vary by major industry groupings and are sensitive to changes in the specification of the wage equations. The author acknowledges the helpful comments of an anonymous referee and the competent research assistance of Harold Leong.     

Cultural studies, a sociological poetics: institutions of the Canadian imaginary

La poétique sociologique est définie comme problématique pour la sociologie critique de la culture afin de considérer l'avenir du rapport du dédoublement entre les cultures vécue et officielle à travers les institutions de l'imaginaire canadien anglais. On propose des critiques de la CBC, du développement de la politique culturelle, et des Études canadiennes comme école de pensée. A critique of the official definition of Canadian culture is presented. Given the distinction between lived and official culture, the question posed is, ‘how do we theorize the relations between these two levels for an entire society? Based principally on Bahktin's concept of ‘dialogism’ with references to Dumont and Rioux, a sociological poetics is advanced as a theoretical device for unravelling ‘the Canada’. It is argued that cultural studies defined as a sociological poetics must negate any definition of the one Canadian culture or representations of the one Canadian society. Lines of inquiry are suggested with respect to the CBC and Canadian studies as cultural industries.