Which characteristic of language has been most clearly displayed by chimps?

Which characteristic of language has been most clearly displayed by chimps?
 
  A) Syntax
  B) Reference
  C) Grammar
  D) Semantics

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Question 2

All of the chimps that were taught sign language seemed to pass the test of:
 
  A) reference.
  B) semantics.
  C) grammar.
  D) All of these are correct.

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Question 3

Which of the following pieces of evidence suggests that chimps who learn ASL find it rewarding?
 
  A) Through gestures, they have told their trainers that they find it rewarding.
  B) They refuse to do other tasks.
  C) They give up food in order to be allowed to sign.
  D) They sign even when they are by themselves.

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Question 4

The most effective way to teach an ape sign language is to:
 
  A) demonstrate a sign while performing the action.
  B) shape the correct action using food as a reinforcer.
  C) shape the correct action using attention as a reinforcer.
  D) punish the occurrence of incorrect actions.

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Question 5

The best way to teach an ape sign language is to:
 
  A) shape the correct action using food as a reinforcer.
  B) punish the occurrence of incorrect actions.
  C) Both a and b are effective.
  D) Neither a nor b is effective.