title: Conditional matching behavior in chimpanzee; implications for the comparative study of intelligence.
authors.forename: H W
authors.initials: HW
authors.lastname: NISSEN
authors.forename: J S
authors.initials: JS
authors.lastname: BLUM
authors.forename: R A
authors.initials: RA
authors.lastname: BLUM
mesh_terms: D000818:Animals; D006801:Humans; D007360:Intelligence; D002679:Pan troglodytes