Robert with Onan signing "hat". Source: Robert Ingersoll, with permission. I recently learned of a book by Robert Ingersoll and Antonina Anna Scarnà titled Primatology, Ethics, and Trauma: The ...

Back in the 1970s, a chimpanzee named Nim Chimpsky took part in a Columbia University research study called "Project Nim." Project Nim was led by Herbert Terrace, a psychologist at Columbia who was ...

A chimpanzee whose ability to learn American Sign Language suggested but did not prove that the animal could engage in humanlike conversation died on Tuesday, The New York Times reported today. The ...

He and his wife and collaborator made headlines with their finding that they could communicate with a young ape using the language of the deaf. By Sam Roberts Washoe was 10 months old when her foster ...

She spent her early years playing in the backyard of a small house in Reno, Nev., learning American Sign Language from the scientists who adopted her. By age 5, she had mastered enough signs to ...