The system of communication used by vervet monkeys:
A) is generally considered equivalent in complexity to human language
B) includes separate calls to signal the presence of different kinds of predators
C) displays displacement and duality of patterning, two hallmarks of human language
D) is taken as evidence that the vervets possess a theory of mind

Question

Quizplus · Accepted Answer

The system of communication used by vervet monkeys includes separate calls to signal the presence of different kinds of predators. This suggests a level of complexity and specificity in their communication, but not necessarily equivalent to human language.

Answer: C 
 The vervet monkey communication system displays displacement (the ability to talk about things not immediately present) and duality of patterning (the ability to combine different sounds to create new meanings), two hallmarks of human language. However, this does not necessarily mean that their communication system is as complex or nuanced as human language.

Answer: D 
 The vervet monkey communication system has not been definitively shown to demonstrate that they possess a theory of mind, which is the ability to attribute mental states to oneself and others. While it is possible that their communication system shows some level of understanding of the perspectives of others, this has not been firmly established.

The System of Communication Used by Vervet Monkeys