Functionalism in the philosophy of mind is the doctrine that what makes something a mental state of a particular type does not depend on its internal constitution, but rather on the way it functions, or the role it plays, in the system of which it is a part. This doctrine is rooted in Aristotle's conception of the soul, and has antecedents in Hobbes's conception of the mind as a “calculating machine”, but it has become fully articulated (and popularly endorsed) only (...) in the last third of the 20th century. Though the term ‘functionalism’ is used to designate a variety of positions in a variety of other disciplines, including psychology, sociology, economics, and architecture, this entry focuses exclusively on functionalism as a philosophical thesis about the nature of mental states. (shrink)

John Yolton has argued that Locke held a direct realist position according to which sensory ideas are not perceived intermediaries, as on the representational realist position, but acts that take material substances as objects. This paper argues that were Locke to accept the position Yolton attributes to him he could not at once account for appearance‐reality discrepancies and maintain one of his most important anti‐nativist arguments. The paper goes on to offer an interpretation of Locke's distinction between ideas of substances (...) and modes, a distinction that helps Locke to explain appearance‐reality discrepancies, although not in a large enough range of cases to strengthen Yolton's interpretation. (shrink)

"The reissue of Guttmann's edition of Rabin's translation is a welcome event. There has long been a need for a readable, judicious edition, for classroom use, of this large and complex work." --Michael L. Morgan, Indiana University.