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The Effect of Monetary Reward and Punishment on the Repetition of Responses under Open and Closed Task Conditions

Subjects were given one study and two test trials on a list of paired associates. Critical responses on the first test were those which were rewarded or punished by gain or withdrawal of money. Between subjects variables were (a) whether the critical responses on test 1 were right or wrong, and (b) whether subjects were informed of the second test before or after test 1. On test 2, subjects were asked to repeat their test 1 responses to the appropriate stimuli. When subjects were unaware that they would receive a second test, rewarding a response on test 1 increased its probability of repetition on test 2; punishment had no significant effect. When subjects were aware that they would be tested again, the reward/ punishment treatment had no effect. An explanation based on the Law of Effect is rejected in favour of a cognitive explanation, utilizing the total time hypothesis.