Giving half the members of a group some purported psychological finding and the other half an opposite result is an easy way to demonstrate the impact of

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Quizplus · Accepted Answer

This is demonstrating the impact of hindsight bias, which is the tendency to believe, after learning an outcome, that one would have foreseen it. By giving half the group one finding and half the opposite, it creates a situation where both sides can later claim that they were not surprised by the outcome, thus demonstrating the hindsight bias.

Giving Half the Members of a Group Some Purported Psychological