Abstract

Members of some social groups hold other members to have special obligations in virtue of their membership. But is this justified? And if so, how? I argue that there is a deep connection between the structure of certain social groups and some special obligations. The issue, then, is to determine how one might have obligations in virtue of one's membership in a particular group. In this dissertation I argue that groups capable of collective action have, as elements of their structure, interpersonal relations that generate commitments and these commitments, in turn, constitute special obligations. ;I begin by arguing that groups capable of collective action must be able to coordinate or monitor the coordination of the members, and to do so within certain normative constraints. To coordinate members according to these constraints, groups must implement some form of decision procedure, a scheme by which the intentions and actions of individual members of a group are coordinated toward some collective purpose or goal. This coordination requires that in groups capable of collective action, there must be some authority system by which the members are coordinated. This authority system must be able to authorize the implementation of norms through members' practices, endorsements, or sanctions, and to adjudicate conflicts that might arise between constraints. I argue that these authority systems may be largely tacit. ;Members of groups capable of collective action do not, however, acquire obligations because of their commitments to the group per se. Rather, members of such groups acquire obligations because of the nature of the relationships they cannot help but form with one another. Their obligations form because of the commitments they have to one another in virtue of being a part of a group capable of collective action. While these obligations may not constitute all-things-considered normative requirements, they do constitute normative considerations that members of groups need to acknowledge when they determine what they ought or ought not to do. I conclude that insofar as a group is capable of collective action, members of those groups have at least these limited obligations toward one another