To better understand the possibility, scope, and limits of punishment for groups we must understand how humans conceptualize group agents, interpret their actions, and make moral judgments about them. In this article I therefore examine the social-cognitive foundations for human perceptions of groups and the moral evaluations of their conduct. Part I identifies the conceptual framework within w...

The log-rank test has been widely used to test treatment effects under the Cox model for censored time-to-event outcomes, though it may lose power substantially when the model's proportional hazards assumption does not hold. In this article, we consider an extended Cox model that uses B-splines or smoothing splines to model a time-varying treatment effect and propose score test statistics for t...

Globalization and trade among developed and developing countries has increased the need of risk communication at the workplace. The purpose of this study was to examine differences in risk communication and perception in various countries. It looked at hazard perception associated with colors and safety words among Indian industry workers. Fifty workers participated in the study focused on haza...