This is the 15th volume in a series of theoretical, review and empirically-based papers on group phenomena. The series adopts a broad conception of group processes consistent with prevailing ones in the social psychological literature. Topics covered in this volume include: sexual orientation and occupation as status; need as a basis for reward allocation; power distribution in conflict networks; and judging the consequences of evaluation by others in status heterogenous groups.

"Advances in Group Processes" publishes theoretical analyses, reviews and theory based empirical chapters on group phenomena. Volume 20, the second volume of a five-series set, includes papers that address fundamental issues of power and status. Chapter one integrates social influence network theory with core ideas from affect control theory and the expectation states programme. The second chapter compares reciprocal exchange to negotiated exchange in terms of the power development, trust and perceptions of fairness. Chapter three examines the entire population of unique exchange networks up...