Francine Patterson

Penny Patterson
Born
Francine Patterson

(1947-02-13) February 13, 1947
CitizenshipUnited States
Alma materUniversity of Illinois at Urbana-Champaign (B.A., 1970)
Stanford University (Ph.D., 1979)
ParentC. H. Patterson
Scientific career
InstitutionsPresident and Research Director of The Gorilla Foundation

Francine "Penny" Patterson (born February 13, 1947) is an American animal psychologist. From 1972 onwards, she taught a modified form of American Sign Language, which she called "Gorilla Sign Language" (GSL), to a gorilla named Koko. The scientific validity of Patterson's claims about the extent of Koko's language mastery has been widely rejected in linguistic and other specialist circles.