Abstract

The concept of instinct has fallen into disrepute, due to a number of problems with the way it had been conceived, mostly related to the concept of innateness. Yet the legacy of instincts survives in sociobiology and evolutionary psychology, in the form of an emphasis on the genetic determinants of behavior. Through a consideration of the two main theories of instinct and the objections that have been raised against them, it becomes clear that existing theories of instinct founder because of their inability to reconcile the psychic and physiological “faces” of instinct. Merleau-Ponty's notion of “being-in-the-world” as a third term linking the psychic and the physiological makes possible a new conception of instinct which escapes these criticisms. At the same time, it opens up a new way of understanding how instincts may operate in human beings.