Suppose MBA students at Stern were asked to answer a set of 50 IQ questions and were

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Suppose MBA students at Stern were asked to answer a set of 50 IQ questions and were placed into one of four groups according to four different treatments. The students were paid a fixed amount of $20 for their participation. The first group was simply asked to answer as many questions as they could. The second group was promised an additional payment of 10 cents for each question they answered correctly. The third group was promised one dollar for each question they answered correctly, whilst the fourth group received three dollars per question they answered correctly. What does behavioral economics predict would be the outcome of this experiment, and why