Social exchange theory is a major theoretical perspective in sociology. Within this framework, social behavior is viewed primarily in terms of the pursuit of rewards and the avoidance of punishment and other forms of cost. Individuals engage in interaction to meet their needs. The basic unit of analysis is the relationship between actors. Thus, exchange theorists view social relations and the social structures generated by the ties that bind people in different forms of association as the central object of sociological inquiry. Major topics of study within this tradition of research include the nature and effects of the interconnections among actors and the distribution of power within exchange structures. Power and status relations among actors in different types of social structures are considered key forces in determining the nature of structural change over time. The major exchange theorists all have treated power, structural sources...