Abstract
Weakness of will, or akrasia, is an exciting issue at the heart of moral psychology and the philosophy of mind and action. This articleoffers a problem-centered guide to the relevant literature in contemporary analytic philosophy with reference to the main classical texts. The topics covered include: contemporary versus classical conceptions of akrasia, the possibility of weakness of will and its significance within instrumental and substantive theories of practical rationality, the nature of akratic actions and akratic attitudes, and the plausibility of a theoretical counterpart of weakness of will, such as epistemic akrasia.