Sixty years ago, scientists embarked on an experiment to teach American Sign Language to chimpanzees—and ultimately prove humans are not alone in our ability to use language. The experiment was a ...

How can one teach language to a chimpanzee who is unable to produce the basic sounds of spoken language (phonemes)? Extensive research has shown they can’t. Two approaches, each using a visual ...

SPOKANE, Wash. — Washoe, a female chimpanzee said to be the first non-human to acquire human language, has died of natural causes at the research institute where she was kept. Washoe, who first ...