  Don’t human beings talk of introspectible entities, thoughts, feelings, and so on, even if these are not recognized by behaviorism or best understood as behavioral tendencies? Psychological behaviorists regard the practice of talking about one’s own states of mind, and of introspectively reporting those states, as potentially useful data in psychological experiments, but as not presupposing the metaphysical subjectivity or non-physical presence of those states. There are different sorts of causes behind introspective reports, and psychological behaviorists take these and other elements of introspection to be amenable to behavioral analysis.  (For additional discussion, see Section 5 of this entry). (See, for comparison, Dennett’s method of heterophenomenology; Dennett 1991, pp. 72–81)