Previous experimental studies have shown that centralized management that a legitimate enforcer implements can be effective in improving cooperation in social dilemmas. The current study examines whether the presence of peer punishment opportunities, especially the chance of retaliating the...

This article examines the concepts of group membership, group identity and racial identity, and group consciousness. For each of these we discuss theoretical definitions, research using the various definitions, and issues of measurement. We show that these concepts are distinct and build on each...

The quantitative literature on civil conflict is generally concerned with state-level risk factors. By conceptualizing the state as the unit of analysis this literature suffers from an aggregation problem in regards to its main findings, which identify mechanisms that are often only indirectly...

This paper develops a model of social interactions and endogenous poverty traps. The key idea is captured in a framework in which the likelihood of future social interactions with members of one%u2019s group is partly determined by group-specific investments made by individuals. I prove three...

Human experience can only be understood across the landscape of time. Yet organizational and groups research has traditionally paid little attention to time as a construct. Over the last 15 years, several authors have begun to study different aspects of group temporality, but these contributions...

The papers in this volume were presented in May 2000, at a conference held at Stanford University's Graduate School of Business. The purpose of the conference was to explore individual motivation and sensemaking in the context of group membership. This volume presents the papers discussed at...

This paper considers the semiparametric identification of endogenous and exogenous peer effects based on group size variation. We show that Lee (2006)'s linear-in-means model is generically identified, even when all members of the group are not observed. While unnecessary in general,...