Use of numbers by a chimpanzee

Teaching Sign Language to a Chimpanzee

Rod Gardner, Beatrice T. Gardner · Science · 1969 · 1.6K citations

Life Sciences, Evolutionary Biology, Genetics +13

Can an Ape Create a Sentence?

H. S. Terrace, Laura‐Ann Petitto, Richard J. Sanders et al. · Science · 1979 · 692 citations

Language Studies, Anthropology, Linguistics +17

Intelligence in ape and man

Jill G. de Villiers · Intelligence · 1977 · 421 citations

Social Sciences, Evolutionary Biology, Psychology +10

The gestures of a gorilla: Language acquisition in another pongid

Francine Patterson · Brain and Language · 1978 · 393 citations

Language Studies, Linguistics, Zoology +10

Counting behavior in animals: A critical evaluation.

Hank Davis, John Memmott · Psychological Bulletin · 1982 · 217 citations

Life Sciences, Behavioral Sciences, Psychology +8