 Contemporary philosophers of mind have typically supposed (or at least hoped) that the mind can be naturalized – i.e., that all mental facts have explanations in the terms of natural science. This assumption is shared within cognitive science, which attempts to provide accounts of mental states and processes in terms (ultimately) of features of the brain and central nervous system. In the course of doing so, the various sub-disciplines of cognitive science (including cognitive and computational psychology and cognitive and computational neuroscience) postulate a number of different kinds of structures and processes, many of which are not directly implicated by mental states and processes as commonsensically conceived. There remains, however, a shared commitment to the idea that mental states and processes are to be explained in terms of mental representations.