Behavioral and Brain Sciences

Open Peer Commentary
Heyes, C. M.: Theory of mind in nonhuman primates

Having a concept “see” does not imply attribution of knowledge: Some general considerations in measuring “theories of mind”

David A. Leavens a1
a1 Department of Psychology, University of Georgia, Athens, GA 30602; and Division of Psychobiology, Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322


That organisms have a concept “see” does not necessarily entail that they attribute knowledge to others or predict others' behaviors on the basis of inferred mental states. An alternative experimental protocol is proposed in which accurate prediction of the location of an experimenters' impending appearance is contingent upon subjects' attribution of knowledge to the experimenter.