On a multiple FR 50 VI 60-sec schedule of reinforcement, the first component is changed to an FR 300 schedule. As a result, the rate of response on the VI 60-sec schedule increases. This is an example of a(n) _____.
A) positive contrast effect
B) negative contrast effect
C) anticipatory contrast effect
D) discriminatory contrast effect

Question

Quizplus · Accepted Answer

This is an example of a positive contrast effect, where the rate of response increases in the unchanged component (VI 60-sec schedule) of a multiple schedule following a decrease in the rate of reinforcement in the other component (change from FR 50 to FR 300). This occurs because the unchanged component becomes relatively more reinforcing compared to the changed component.

On a Multiple FR 50 VI 60-Sec Schedule of Reinforcement