Quiz: Dishonesty III
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In a study [1], students were asked to solve matrix math problems.
They were divided into three different groups. The control group had no opportunity to cheat. The two other groups did not get their answers checked; instead, they reported how many they solved themselves - a practice that, on its own, opens up the possibility of cheating. When reporting how many problems they had solved, the last two groups had to fill out a form based upon the basic IRS 1040-EZ tax form.
On this form, they reported the number of solved problems as their income, and they would be allowed a 20% tax deduction after deducting travel expenses themselves. The two groups only had one difference on their tax forms. On one, they signed only at the bottom; on the other, they also signed at the top, pledging to be honest.
On average, which group reported more problems solved?