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Patterson was widely criticized for misrepresenting Koko's skills, and, in the 1990s, for her care of Koko and Gorilla Foundation staff. Despite such controversies, Koko's story changed the public image of gorillas, previously assumed to be brainless and violent. [ 6 ]
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 Gorilla Foundation is a non-profit organization founded in 1976 by Francine Patterson and Ronald Cohn [1] [2] with Barbara F. Hiller. [3] It was created in order to purchase a female western lowland gorilla named Koko from the San Francisco Zoo. Patterson had been attempting to teach Koko American Sign Language since 1972, under custody of ...
Koko, a western lowland gorilla said to have mastered American Sign Language, has died aged 46, the California institute which studied her said on Thursday. "The Gorilla Foundation is sad to ...
On Thursday, The Gorilla Foundation revealed that Koko, one of the few primates able to communicate using sign language, had passed away in her sleep.
Her trainer saw the gorilla's 44th birthday as the perfect opportunity to let Koko experience the joys of motherhood -- with an adorable litter of kittens.
Ronald Herbert Cohn (November 11, 1943 – September 16, 2022) was an American zoologist who was a long-time research collaborator of psychologist Francine Patterson in her work in training Koko the gorilla in the use of American sign language.
Michael (March 17, 1973, Cameroon – April 19, 2000) was a male gorilla involved in experiments to teach apes sign language. He is alleged to have had a working vocabulary of over 600 signs in American Sign Language, taught to him by Koko, a female gorilla; Francine Patterson; and other staff of Stanford University.