13. In a study on reinforcement, a researcher allows a rat to choose between fou

Question

13. In a study on reinforcement, a researcher allows a rat to choose between four arms of a plus maze. A plus maze is a maze shaped like a plus sign, with each extension from the cen- ter being called an "arm" in the maze. Uporn being placed in the center of the maze, the probability on any given trial that a subject is reinforced in the left arm is .30, the right arm .30, the front arm.20, and the back arm.20. What is the probability the rat will be rein- forced when entering the left or right arm? lal (bl To make the optimal probability choice subject should enter the right or on each trial. Explain why this i s tru

Explanation / Answer

(a) probability that the rat will be reinforced when entering the left or right arm = 0.3+0.3 = 0.6.

(b) To make the optimal probability choice, the subject should enter the right or ;eft arm. Because, the probability of these arms is more (right = left = 0.3) compared to that of front and back arms(0.2 each).

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