In phase 1 of a choice experiment involving concurrent VI schedules,a human subject receives 25% of his reinforcers by making a left response.In phase 2,he receives 75% of his reinforcers by making a left response.The subject's percentage of left responses is 40% in phase 1,and 60% in phase 2.This performance is an example of
A)matching
B)undermatching
C)overmatching
D)bias

Question

Quizplus · Accepted Answer

Undermatching occurs when the proportion of responses is less extreme than the proportion of reinforcers, as seen here where the change in response proportion (from 40% to 60%) is less than the change in reinforcer proportion (from 25% to 75%).

In Phase 1 of a Choice Experiment Involving Concurrent VI