A Longitudinal Analysis of Adolescent Substance Use and School Motivation Among African American Youth

Cross‐sectional research has shown a link between adolescent substance use and educational motivation. The purpose of the current study was to examine this link in a longitudinal sample of African American youth. The study examined the interrelationships between alcohol and both marijuana use and school motivation over the high school years and their effect on graduation in 681 African American adolescents (50.8% female). School motivation was shown to relate to subsequent alcohol use throughout high school and marijuana use early in high school. School motivation did not affect graduation status, but alcohol and marijuana use were related to a lower likelihood of graduating from high school. Some gender differences and differences among those who had tried alcohol or marijuana at the first wave as opposed to those who had not tried each substance were found. The findings support a systems model where school experiences can affect substance use, which, in turn, can affect the completion of high school.     

Subjective Well-Being and Social Capital in Belgian Communities. The Impact of Community Characteristics on Subjective Well-Being Indicators in Belgium

In this article, we investigate the effect of individual and community level characteristics on subjective well-being in Belgium. Various indicators for subjective well-being are being used in a multilevel analysis of the 2009 SCIF survey (n = 2,080) and the 2006 Belgian ESS sample (n = 1,798). On the individual level, most hypotheses on the determinants of subjective well-being were confirmed. Living with a partner and age were shown to have strong effects, but also social capital indicators had a significant positive effect on subjective well-being. All these effects remained significant controlling for optimism. On the community level, especially unemployment rate had a negative impact on subjective well-being. The analysis further demonstrates that in homogeneous regions, community characteristics have a far weaker impact on subjective well-being indicators than in economically more heterogeneous regions.     

Depression, anxiety, and religious life: a search for mediators

We examine several potential mechanisms linking religious involvement to depressive symptoms, major depression, and anxiety. Logistic and OLS regression estimations test five sets of potential psychosocial religion mediators: perceived attitudes toward and motivations for attendance; positive and negative religious coping; religious attitudes, beliefs, and spirituality; congregational support and criticism; and interpersonal and self-forgiveness. Compared to attending services less than once a month or never, attending services once a week but no more is associated with fewer depressive symptoms and anxiety symptoms. Hypothesized mediators, including meaning, interpersonal and self-forgiveness, congregational criticism, social attendance beliefs, and negative coping are independently associated with one or more mental health outcomes.     

Réinterroger la relation entre école et mobilité sociale. Le cas des enfants d’agriculteurs et d’ouvriers dans l’Ouest

Till now, the relation between schooling and social mobility, a classical question in the sociology of education, has been approached through analyses of a structural sort, either by focusing on the functions that schools are supposed to fill or by adopting the timeless model of neoclassical economics. This approach does not examine all possible relations between schools and social mobility; nor does it see these relations in terms of a process. A study of the scholastic biographies of the children of farmers and workers in western France renews our conception of this relation. It shows that this relation mainly stems from a combination of quite heterogeneous elements, which we glimpse in these biographies.     

When in Rome,Do as the Romans Do: The Acculturation of Generalized Trust among Immigrants in Western Europe

The purpose of the article is to examine whether an acculturation of trust takes place among non-western immigrants upon migrating to Western Europe and whether inclusionary integration policies have an effect on this process. Building on the second and third wave of the European Social Survey (ESS) we show that an acculturation of trust does take place, but that integration policy does not affect this process. In spite of some variation across destination countries, we also find that second generation immigrants tend to adapt more to the level of trust of natives in the destination country than first generation immigrants do. This indicates that the acculturation of trust is strengthened with the second generation in the country. The results hold up when controlling for confounding variables including the trust in the country of origin of immigrants.     

An improved SAEM algorithm for maximum likelihood estimation in mixtures of non linear mixed effects models

We propose a new methodology for maximum likelihood estimation in mixtures of non linear mixed effects models (NLMEM). Such mixtures of models include mixtures of distributions, mixtures of structural models and mixtures of residual error models. Since the individual parameters inside the NLMEM are not observed, we propose to combine the EM algorithm usually used for mixtures models when the mixture structure concerns an observed variable, with the Stochastic Approximation EM (SAEM) algorithm, which is known to be suitable for maximum likelihood estimation in NLMEM and also has nice theoretical properties. The main advantage of this hybrid procedure is to avoid a simulation step of unknown group labels required by a “full” version of SAEM. The resulting MSAEM (Mixture SAEM) algorithm is now implemented in the Monolix software. Several criteria for classification of subjects and estimation of individual parameters are also proposed. Numerical experiments on simulated data show that MSAEM performs well in a general framework of mixtures of NLMEM. Indeed, MSAEM provides an estimator close to the maximum likelihood estimator in very few iterations and is robust with regard to initialization. An application to pharmacokinetic (PK) data demonstrates the potential of the method for practical applications.     

On risk aversion,classical demand theory,and KM preferences

Building on Kihlstrom and Mirman (Journal of Economic Theory, 8(3), 361–388, 1974)’s formulation of risk aversion in the case of multidimensional utility functions, we study the effect of risk aversion on optimal behavior in a general consumer’s maximization problem under uncertainty. We completely characterize the relationship between changes in risk aversion and classical demand theory. We show that the effect of risk aversion on optimal behavior depends on the income and substitution effects. Moreover, the effect of risk aversion is determined not by the riskiness of the risky good, but rather the riskiness of the utility gamble associated with each decision.     

Estimating Mortality Differences in Developed Countries From Survey Information on Maternal and Paternal Orphanhood

In general, the use of indirect methods is limited to developing countries. Developed countries are usually assumed to have no need to apply such methods because detailed demographic data exist. However, the potentialities of demographic analysis with direct methods are limited to the characteristics of available macro data on births, deaths, and migration. For instance, in many Western countries, official population statistics do not permit the estimation of mortality by socioeconomic status (SES) or migration background, or for estimating the relationship between parity and mortality. In order to overcome these shortcomings, I modify and extend the so-called orphanhood method for indirect estimation of adult mortality from survey information on maternal and paternal survival to allow its application to populations of developed countries. The method is demonstrated and tested with data from two independent Italian cross-sectional surveys by estimating overall and SES-specific life expectancy. The empirical applications reveal that the proposed method can be used successfully for estimating levels and trends of mortality differences in developed countries and thus offers new prospects for the analysis of mortality.     

GLOBAL BLACK SELF-FASHIONINGS: HIP HOP AS DIASPORIC SPACE

This essay examines how the “black” racial significance of hip hop culture is received, interpreted, and redeployed within the Afro-Atlantic world. Beyond questions of cultural consumption and reproduction, it is argued that hip hop's expanding global reach has facilitated the contemporary making and moving of black diasporic subjects themselves. Here, African descendant youth in an array of locales use the performative contours of hip hop to mobilize notions of black-self in ways that are at one time both contestive and transcendent of nationally bound racial framings. Hip hop in this way can be seen as enabling a current global (re)mapping of black political imaginaries via social dynamics of diaspora. In pursuing this argument, this essay looks toward hip hop movements in Brazil, Cuba, and South Africa as compelling, yet varying examples of how transnationally attuned identities of blackness are marshaled in the fashioning of diasporic subjects through hip hop.