Covers areas that consist of a clarification of theoretical research on social networks; the emergence of trust and cooperative norms under conditions of uncertainty; social identity processes; and processes in discussion groups and teams.

Preface (S.R. Thye et al.). Social influence networks and opinion change (N.E. Friedkin, E.C. Johnsen). Understanding Network Exchange Theory (M.J. Lovaglia). Altruism vs. self-interest in social support: computer simulations of cooperation and partner selection in social support networks (A. Flache, R. Hegselmann). The production of trust in online markets (P. Kollock). Part of life's rich tapestry: stereotyping and the politics of intergroup relations (P.J. Oakes et al.). Bounded generalized reciprocity: ingroup boasting and ingroup favoritism (Toshio Yamagishi et al.). Status orders in task discussion groups (J. Skvoretz et al.). Institutional logics and group environments: toward an open system perspective on group processes (L. Troyer, S.D. Silver).