Bede Rundle challenges the quasi-mechanical view of human action that is dominant in contemporary philosophy of mind. A materialist view of the mind and a causal theory of action fit together conveniently: the notion of action as caused by thoughts and desires allows philosophers to accommodate explanations of action within a framework that is congenial to scientific understanding, and the conception of mind as physical enables them to make sense of causal transactions between the two domains. Mind in Action offers an alternative approach. Compelling reasons are given for demoting causation and for shifting the emphasis to the role played by behaviour in accounts of thought, belief, desire, intention, freedom, and other key concepts. Rundle's approach sheds fresh light not only on human behaviour but also on animal mentality, and has important implications for the feasibility of current programmes in cognitive science.