She demonstrated that Koko was able to communicate using a number of signs adapted from American Sign Language. Gorillas have thick, stubby fingers and hands that move differently than humans, so Koko was unable to make some ASL signs.

Koko learned sign language at a pace that paralleled language acquisition by human children. Her most rapid gains in new vocabulary occurred between years 2.5 and 4.5, as compared with human children who spike between 2 and 4 years.

2021年1月22日 · Koko spoke a modified form of sign language that researchers called "Gorilla Sign Language." And according to The Atlantic , she demonstrated creativity and understanding of the language from an early age.

2018年6月21日 · Koko, the western lowland gorilla that died in her sleep Tuesday at age 46, was renowned for her emotional depth and ability to communicate in sign language.

Watch Koko the signing gorilla in this clip from a 1981 National Geographic documentary. Koko died in her sleep on Tuesday, June 19, 2018. Subscribe: http:/...

The Koko Signs app will enable everyone to learn sign language from Koko and help make communication with great apes ubiquitous.

2015年8月28日 · Over the past 43 years, since Patterson began teaching Koko at the age of 1, the gorilla has learned more than 1,000 words of modified American Sign Language—a vocabulary comparable to that...

ASL (American Sign Language) Sample Koko Videos Containing the Sign “KOKO” Koko introduces herself and asks people to help save her species, gorillas.

2018年6月21日 · WOODSIDE, Calif. — Koko the gorilla who mastered sign language, raised kittens and once playfully tried on the glasses of the late actor Robin Williams, has died. She was 46.

2018年6月21日 · Koko was taught sign language from an early age as a scientific test subject and eventually learned more than 1,000 words, a vocabulary similar to that of a human toddler. She became a...