Hypotheses linking positional power in bargaining networks to evaluations of self and others were supported: (1) persons in central exchange network positions evaluate themselves as feeling more pleasant and more exhilarated; and (2) central persons impute lower status and higher positive evaluations to peripheral positions. (Author)

Social exchange theory was employed to predict instigative helping behavior as a function of two types of resources available to the recipient for reciprocation (social and non-social). The possibility of influencing reciprocation of both types of resources produced significant increases in subjects' helping. (Author)