The Chimp Who Used Plastic Words David Premack started at UC Santa Barbara in 1966. His chimpanzee was named Sarah. He gave her plastic tokens. Different shapes meant apple, give, same. She arranged them on a magnetic board to form sentences. She passed analogy tests no animal had passed. She lived to age 59. She died in 2019 at a Texas sanctuary.
Spot an error? Email hello@thefact5.com with a source — we correct visibly.
