"He is everything": religion's role in the lives of immigrant youth

Using emergent theme analysis of qualitative interview data in combination with quantitative survey data, the role of religion in the lives of immigrant youth was explored. Latino, Haitian, and Chinese teenagers described, in their own rich words, the significance of religion to them; their responses are reflected in themes that point to the potential protective role of religion for some immigrant groups.     

Why Do They Start It? Explaining Reported Early-Teen Sexual Activity

This paper seeks an account of why young teens initiate consensual sexual activity. It does so by constructing statistical models aimed at distinguishing those who report having initiated sexual activity from those who have not in four samples of eighth graders from an Upstate New York county. Theoretical selection of the model variables is guided by insights from problem syndrome, control and differential association theories. From our findings we conclude the following: (1) Risk behaviors foreseen by the problem syndrome approach, including having used marijuana and having been drunk, are significant, powerful predictors of early-teen sexual activity. (2) The social setting of consensual sexual activity differs by sex at the eighth grade level. For example, having a boyfriend is a more consistent, powerful predictor variable for girls than is having a girlfriend for boys and there is evidence to support the hypothesis that boys initiate sexual activity in the context of status-seeking while girls are more likely to do so as a way of attaining approval. (3) Our findings do not give clear primacy to parents or peers as an influence on early-teen consensual sexual activity. Both control theory, usually associated with parental-influence variables, and differential association theory, usually associated with peer-influence variables, receive support. (4) The results of the research spanning a 2-year period of intensive community antiteen-pregnancy efforts by a Zero Adolescent Pregnancy (ZAP) campaign are consistent with the conclusion that such a multifaceted approach might help lower early-teen initiation of sexual activity.     

An interactive three-stage model for mutual funds portfolio selection

The aim of this work is to be a useful instrument for helping finance practitioners on the selection of suitable mutual fund portfolios. The portfolio selection problem is characterized by imprecision and/or vagueness inherent in the required data and more generally, in the context where investors have to make decisions. In order to mitigate these problems, a three stage model has been proposed based on a multi-index model and considering several market scenarios described in an imprecise way by an expert. The proposed fuzzy model allows the Decision Maker to select, by means of an outranking method, a suitable portfolio taking into account the uncertainty related to the market scenarios and the imprecision and/or vagueness associated with the model data.     

Networks within Industrial Districts: Organising Knowledge Creation and Transfer by Means of Moderate Hierarchies

This paper furnishes evidence of innovative modes of organisationof inter-firm relationships and knowledge management within industrialdistricts. With the aid of a district firm, we first highlight the marked tendency among the largest companies to eschew an exclusively endogenous innovative process. Next, we analyse how the leading firm can play an active role within a network by assigning outside its boundaries tasks that were once undertaken in-house. This happens gradually with the moderate hierarchisation of originally destructured network relationships. In its attempt to organise innovative modes of design and manufacturing, without losing control and strategic legitimisation, the leading firm elects a coordinating agent withdirect responsibility over a selected team of specialist suppliers.     

Jugend, Politik und Vertrauen: Ein Beitrag zur Bedeutung von Vertrauen für das politische Handeln Jugendlicher

Discussions concerning low trust scores in politics and politicians (both refer to a lack of political interest and activity), increasingly focus attention on how, in particular, adolescents relate trust to political activity. Younger people are said to show a lack of political interest. Nevertheless empirical studies about the determinants of missing political commitment and about the combination of trust and political action are extremely rare. Therefore, this empirical study focuses on the impact of trust on juveniles‘ political involvement. The question which characteristics trustworthy politicians must have in adolescents‘ eyes, and if relevant interindividual differences do exist, is of special regard.     

A Likelihood‐Based Analysis for Relaxing the Exclusion Restriction in Randomized Experiments with Noncompliance

The exclusion restriction is usually assumed for identifying causal effects in true or only natural randomized experiments with noncompliance. It requires that the assignment to treatment does not have a direct causal effect on the outcome. Despite its importance, the restriction can often be unrealistic, especially in situations of natural experiments. It is shown that, without the exclusion restriction, the parametric model is identified if the outcome distributions of various compliance statuses are in the same parametric class and that class is a linearly independent set over the field of real numbers. However, the relaxation of the exclusion restriction yields a parametric model that is characterized by the presence of mixtures of distributions. This scenario complicates the likelihood‐based estimation procedures because it implies more than one maximum likelihood point. A two‐step estimation procedure based on detecting the root that is closest to the method of moments estimate of the parameter vector is then proposed and analyzed in detail, under normally distributed outcomes. An economic example with real data concerning returns to schooling concludes the paper.     

Sektion Soziologische Theorien

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