Since the early reports on Washoe, numerous other studies have been conducted, with varying levels of success, including one involving a chimpanzee named jokingly Nim Chimpsky, trained by Herbert Terrace of Columbia University.
Sejak laporan pertama tentang Washoe, sejumlah penelitian lain telah dilakukan dengan tingkat kesuksesan yang beragam, termasuk satu ekor simpanse yang bernama, secara parodi, Nim Chimpsky, dilatih oleh Herbert Terrace di Columbia University.