Investigations of Animal Behaviors Indicate That

Multiple Choice

Investigations of animal behaviors indicate that

A) the actions of animals can be explained by instinct and by principles of operant conditioning alone.
B) chimpanzees have a rudimentary sense of number and appear to have some sort of summing ability.
C) chimpanzees trained to use signs with humans do not use signs to converse with other chimps.
D) when language training procedures became objective,apes could not use symbols to refer to objects.