Harry Harlow and His Colleagues Completed a Number of Studies

Multiple Choice

Harry Harlow and his colleagues completed a number of studies in which baby macaque monkeys were raised with two artificial surrogate mothers. One of the mothers was made of wire, and the other was made of soft cloth. Either mother could provide food. Harlow was interested in which of the mothers the infant monkeys would seek out when they were startled or frightened. In these studies the dependent variable was the:

A) material from which the surrogate was made.
B) surrogate that the infant monkey preferred when it was startled.
C) age of the infant monkey at the time of the test.
D) length of time the infant monkey spent exploring the cage.