If a rat is on a VI-20-second schedule for bar-pressing, the rat will be reinforced
A)continuously for 20 seconds and then will receive no more reinforcement.
B)for every 20 seconds of continual responding.
C)for each bar press that occurs exactly 20 seconds after the last reinforced response.
D)for the first bar press that occurs after a random time interval that averages 20 seconds in length.

Question

Quizplus · Accepted Answer

In a Variable Interval (VI) schedule, reinforcement is given for the first response after a varying time interval that averages to a specific duration, in this case, 20 seconds. This means the rat is reinforced for the first bar press after an interval that averages 20 seconds, but the interval varies around this average, making it unpredictable.

If a Rat Is on a VI-20-Second Schedule for Bar-Pressing