Introspection.

Two main questions about introspection are addressed: whether it exists, and whether it is a reliable source of self-knowledge. Most philosophers have assumed that the answers to both questions are positive, whereas an increasing number of cognitive scientists take the view that introspection is either nonexistent (with self-attributions of mental states being made on the same sort of interpretative basis as attributions of mental states to other people) or unreliable. A number of different models of self-knowledge are discussed, and the evidence bearing on the existence and reliability of introspection is reviewed. New experiments are required to tease apart some of the alternatives.