Give three examples where apes have been taught to use sign language. 1. What are the major criticisms of studies where apes have learnt to use sign language? 2. What evidence is there to suggest that...

Give three examples where apes have been taught to use sign language.

1. What are the major criticisms of studies where apes have learnt to use sign language?

2. What evidence is there to suggest that apes really can learn and use sign language?

3. Give details of three other types of non-human animal that have been taught to use language.