Before revision: Ann and David Premack 's designed a potentially promising methodology to teach apes to ask questions in the 1970s: "In principle interrogation can be taught either by removing an element from a familiar situation in the animal's world or by removing the element from a language that maps the animal's world.
After revision: Ann and David Premack designed a potentially promising methodology to teach apes to ask questions in the 1970s: "In principle interrogation can be taught either by removing an element from a familiar situation in the animal's world or by removing the element from a language that maps the animal's world.