Violence Exposure and Drug Use in Central American Youth: Family Cohesion and Parental Monitoring as Protective Factors

Associations between witnessing serious violence and drug use, and the protective influences of family cohesion and parental monitoring, were investigated among 9,840 adolescents (50.5% female, M age=15.29 years, SD=1.76) living in Panama and Costa Rica. After accounting for demographics and parental and sibling substance use, witnessing serious violence was associated with greater drunkenness, tobacco use, number of illicit drugs used, and problems with drugs and alcohol. In every analysis, exposure to violence was associated with more drug use, while family cohesion and parental monitoring attenuated risk. Further, family cohesion and parental monitoring exerted a protective‐stabilizing effect on number of illicit drugs used and on problems with drugs and alcohol. There were few interactions with age. Implications for prevention are discussed.     

Public Life and Globalization as Cultural Vision*

Dans cette étude, nous examinons les répercussions sociales de la mondialisation dans une perspective culturelle. Notre analyse porte sur le conflit qui existe entre le discours sur la mondialisation et les priorités locales, entre les droits de l'individu et les engagements des pouvoirs publics ainsi que sur la difficulté de trouver de nouveaux points d'ancrage de l'identité culturelle dans un contexte où les frontières territoriales entre les États s'effacent et où les idées de progres, de modernité et d'évolution se sont érodées. Ces traits accompagnent la transformation amorcée dans le cadre des relations complexes et hégémoniques qui caractérisent aujourd'hui le système mondial. Ce conflit et ces problèmes demeurent un axe fondamental du débat politique. Nous suggérons que les différentes formes de participation se traduisent de diverses façons dans le champ de l'expression politique et dans Interprétation des exigences sociales et des droits, et influent sur la vie publique à la veille du XXI^esiécle. This article explores the social implications of globalization as cultural vision. Discussion bears upon the tension between the discourse of globality and local priorities, of individual rights and public commitments, and upon the problems of finding new ways for grounding identities as territorial state boundaries are weakened and the ideas of progress, modernity and evolutionary perspectives are eroded as part of a process of change initiated in the developed and hegemonic settings of the world system. It is claimed that these tensions and problems remain a crucial axis of political debate. It is suggested that different patterns of participation meld in manifold ways into recreated forms of political will and varied interpretations of social claims on and rights to affect the shaping of public life at the turn of the century.     

A Semi-parametric Bayesian Analysis of Survival Data Based on Lévy-driven Processes

In the presence of covariate information, the proportional hazards model is one of the most popular models. In this paper, in a Bayesian nonparametric framework, we use a Markov (Lévy-driven) process to model the baseline hazard rate. Previous Bayesian nonparametric models have been based on neutral to the right processes, which have a number of drawbacks, such as discreteness of the cumulative hazard function. We allow the covariates to be time dependent functions and develop a full posterior analysis via substitution sampling. A detailed illustration is presented.     

Identifying Preferences for Conditional Cooperation Using Individual Beliefs

The relationship between contributions and elicited beliefs in a repeated two-person public good experiment is modeled with the help of a parsimounious random-utility function that allows for conditionally cooperative, opportunistic, and altruistic patterns of behavior. Under standard assumptions, a latent-class mixed logit specification with three sub-populations is shown to capture well heterogeneity in individual contribution levels over time, while also accomodating for different degrees of heteroscedasticity. The estimation results are consistent with the conjecture that the majority of players in public goods games are strongly conditional cooperators, with smaller fractions of the population leaning to opportunistic or altruistic behavior.     

Size does matter: Passive sampling in urban parks of a regional bat assemblage

Urban Ecosystems - We studied the occurrence of bats in urban parks in the city of Madrid (Spain), and the resulting patterns were compared with bat occurrence in the surrounding region. In this...     

Model-based clustering with determinant-and-shape constraint

Statistics and Computing - Model-based approaches to cluster analysis and mixture modeling often involve maximizing classification and mixture likelihoods. Without appropriate constrains on the...     

A Manager is a Manager is a Manager? Race and Managerial Impact on Organizational Performance

Contemporary scientific analyses of public organizations underscore the salience of management for understanding how governmental bureaucracies perform. Yet little is known of administrators from minority social groups, and whether their organizations perform better or worse than other bureaucracies. Emphasizing the impact of network engagement on organizational performance, this exploratory study addresses this important research deficiency. A critical component of the analysis presented is the differential impact of administrative engagement with internal and external networks on minority and status quo clientele outcomes. The findings have important implications for studies of managerial networking, equity, and representation in public organizations.     

Characterizing best–worst voting systems in the scoring context

An increasing body of theoretical and empirical work on discrete choice considers a choice design in which a person is asked to select both the best and the worst alternative in an available set of alternatives, in contrast to more traditional tasks, such as where the person is asked to: select the best alternative; select the worst alternative; rank the alternatives. Here we consider voting systems motivated by such “best–worst” choice; characterize a class of “best–worst” voting systems in terms of a set of axioms in the context of scoring rules; and discuss briefly possible extensions to approval–disapproval systems.     

An alternative test of Kuznets’ hypothesis

This paper uses a novel approach for testing Kuznets’ hypothesis. Following Kuznets’ original insights, we test for an inverted U relationship between employment outside agriculture and income inequality, instead of the traditional focus on GDP per capita and income inequality. Our results, obtained using panel and country by country regressions, do not support Kuznets’ hypothesis.