Abstract
It is both common and natural to think of addiction as a kind of defect of the will. Addicts, we tend to suppose, are subject to impulses or cravings that are peculiarly unresponsive to their evaluative reflection about what there is reason for them to do. As a result of this unresponsiveness, we further suppose, addicts are typically impaired in their ability to act in accordance with their own deliberative conclusions. My question in this paper is whether we can make adequate sense of this conception of addiction as a volitional defect. In particular, I want to focus on some philosophical assumptions, from the theory of action, that bear directly on the very idea that addiction might impair the agent’s volitional capacities. Understanding this idea, I shall argue, requires that we start out with an adequate conception of the human will. Only if we appreciate the kinds of volitional capacities characteristic of normal agents can we conceptualize properly the impairment of those capacities represented by addiction, and assess the implications of such impairment for questions of responsibility.