A New Methodology for Before–After Safety Assessment Using Survival Analysis and Longitudinal Data

The widely used empirical Bayes (EB) and full Bayes (FB) methods for before–after safety assessment are sometimes limited because of the extensive data needs from additional reference sites. To address this issue, this study proposes a novel before–after safety evaluation methodology based on survival analysis and longitudinal data as an alternative to the EB/FB method. A Bayesian survival analysis (SARE) model with a random effect term to address the unobserved heterogeneity across sites is developed. The proposed survival analysis method is validated through a simulation study before its application. Subsequently, the SARE model is developed in a case study to evaluate the safety effectiveness of a recent red‐light‐running photo enforcement program in New Jersey. As demonstrated in the simulation and the case study, the survival analysis can provide valid estimates using only data from treated sites, and thus its results will not be affected by the selection of defective or insufficient reference sites. In addition, the proposed approach can take into account the censored data generated due to the transition from the before period to the after period, which has not been previously explored in the literature. Using individual crashes as units of analysis, survival analysis can incorporate longitudinal covariates such as the traffic volume and weather variation, and thus can explicitly account for the potential temporal heterogeneity.     

Mediation Role of Dyadic Coping on Parenting Stress and Relational Resilience in Couples

This study aims to explore the mediating role of dyadic coping between relational resilience and parenting stress on married couples. The study participants comprised 229 married couples with at least one child and who have had a major life event. The relational resilience scale, parenting stress inventory, dyadic coping scale and personal information, and life events forms were used to collect data for this study. Data were analyzed with the actor–partner interdependence mediation model. The results revealed that dyadic coping actor–partner effects did not mediate between relational resilience and parenting stress. The results were discussed in relation to the social-ecological model and relevant literature. Based on the current findings, recommendations and implications for further research and practice were also proposed.     

Globalization and the Question of Social Justice

Previous conceptions of social justice presupposed a closed political community in which nation‐states were to be in full control of policy instruments that reinforced mechanisms of social justice. States’ governing capacity to deliver social justice to their citizens has been challenged in the face of deepening transnational interactions and interdependencies in economic, political, and cultural realms, as these interactions and interdependencies directly affect the lives of millions of people. This paper revisits an ongoing debate on Global Social Justice and aims to introduce two clashing views – namely, Minimalist and Cosmopolitan approaches – on whether or not people in affluent societies have distinctive duties of concern for people in less developed countries. After outlining the main contours of the arguments on both sides, the paper concludes by suggesting that the debate can inform different areas of sociological inquiry that are directly related to issues such as power, inequality, and social exclusion.     

Preparing Community Health Workers for Their Role as Agents of Social Change: Experience of the Community Capacitation Center

Current efforts to better integrate Community Health Workers (CHWs) into the health and social service systems are promising, but may be less effective if they fail to support the role of CHWs as social change agents. The way CHWs are trained influences the roles they play. In this article, we review the literature on CHW training and summarize lessons learned to date. We describe how the Community Capacitation Center in Oregon uses a combination of content, methodology, and values to prepare CHWs to make an optimal contribution to health. Recommendations for CHW training programs and policy makers are provided.     

CONVERGENCE: AN EXPERIMENTAL STUDY OF TEACHING AND LEARNING IN REPEATED GAMES

Nash equilibrium can be interpreted as a steady state where players hold correct beliefs about the other players’ behavior and act rationally. We experimentally examine the process that leads to this steady state. Our results indicate that some players emerge as teachers—those subjects who, by their actions, try to influence the beliefs of their opponent and lead the way to a more favorable outcome—and that the presence of teachers appears to facilitate convergence to Nash equilibrium. In addition to our experiments, we examine games, with different properties, from other experiments and show that teaching plays an important role in these games. We also report results from treatments in which teaching is made more difficult. In these treatments, convergence rates go down and any convergence that does occur is delayed.