Abstract

According to the causal theory of action---briefly, "causalism"---actions are distinguished from other events in the world by being caused by mental states of the agent. I argue that the standard argument for causalism is in fact unsuccessful, and then sketch an alternative account of action. The dominance of causalism is largely due to an apparently simple argument of Donald Davidson's: the only way to make sense of the connection between an action and the reason for which it is performed is to suppose that the reason causes the action. In response, I first show that Davidson's argument has a more complicated structure than is usually supposed, turning essentially on consideration of cases in which an agent acts on one reason rather than another. Davidson's proposal is that causalism offers the best explanation of this contrastive phenomenon. ;I argue that, in order to explain Davidson's contrastive phenomenon successfully, the causalist must appeal to the additional notion of motivational strength. This undermines the causalist's argument because noncausalists can also invoke the idea that some reasons are motivationally stronger than others to explain Davidson's contrastive phenomenon. Thus, whichever side has the better account of motivational strength will have the more plausible theory of action. Standard theories of motivational strength, including causal theories, are all arguably unsatisfactory, but I conclude that a version of interpretationism offers a better account of motivational strength, suitable for a noncausal theory of action