Sign Language Books

“Wambach's concerns raised questions about the impact that deaf signers could have on Project Nim, and perhaps inadvertently about how Terrace's study might compare with the work done by the Gardners in Nevada, who had expressly designed their experiments to include deaf signers. Simply having Falitz sign at the weekly meetings and interpret for Wambach in the discussions brought a new dimension to their work. Wambach was not particularly critical of Terrace, who was older and far more established than she, but she wanted the staff to have a better understanding of the world of deaf speakers—those who used ASL because they needed a language.
Thanks to Wambach, the chimp project began attracting deaf volunteers (including one who is remembered for having love and hate tattooed on his knuckles), who formed a small subculture within Terrace's staff. In an attempt to bridge these two worlds, one night the deaf volunteers arranged to plug up the ears of the hearing staff and take them out to a restaurant for dinner. They were instructed to communicate exclusively in ASL from the moment the plugs were placed in their ears on the way to the restaurant, during the meal, and all the way back to Delafield. The hearing group found the experience to be a terrible struggle. But what made an indelible impression on Johnson was the way that everybody in the restaurant spoke really slowly and loudly to them, treating them as if they were all mentally incapacitated.”
― Elizabeth Hess, Nim Chimpsky: The Chimp Who Would Be Human