Sign language acquisition in primates has been criticized on the basis that __________.
A. the signs were just imitative, were often random combinations, and did not involve a two-way conversation
B. chimpanzees and gorillas are not smart enough to learn sign language
C. chimpanzee and gorilla hands are not really capable of making most signs in ASL D. primates already have a communication system, so they cannot learn another one
Question 2
Why are mirror neurons likely to have played a role in the evolution of human language?
A. They enabled early hominins to master a sense of self.
B. They link intention with the sending and receiving of messages.
C. They translate thoughts through the production of sounds.
D. They cause growth in the areas of the brain associated with call systems.
Evolutionary tree for the primates
Mycorrhizae aid nutrient acquisition.
stop sign
Language tree
Matthew Ritchie, No Sign of the World.
Cellular basis of life.