Abstract

Arguments against naturalistic style accounts of representations in humans and other animals would be obviated if scepticism concerning their conclusion could be justified. One such justification consists in showing, in detail, that the concept of representation has a purchase among 'non-linguistic' animals. Thereby the existence of natural or 'intrinsic' intentionality is secured. Four levels of explanation can be distinguished in the study of animal behavior and capacity rely on attributions of representations to animals (to what N. Humphrey calls 'nature's psychologists'). Such explanations cite factors which do not covary directly with physical magnitudes in the stimuli. Additional animal studies are analysed, examining (1) the claim that not all representations are 'linguistic' (the Two Representations Hypothesis), (2) categorization in animals, (3) 'self-representation' in animals, (4) animal deception, and (5) comparative and weighting representations in animal learning and behavior.