Yerkish

Yerkish is a symbol-based communucation system developed by Ernst von Glasersfeld to communicate with the primates at the Yerkes National Primate Research Center in Atlanta, GA. Duane Rumbaugh successfully used the system to communicate with three chimpanzees at the center. The symbols represent but are not necessarily deptictons of words and are laid out on a keyboard for use by the primates and the reserchers.