What logical evidence do Levitt and Dubner present in response to the counterclaim that a 7–7 wrestler might be more motivated to win and therefore perform better?

Levitt and Dubner test the idea that a 7–7 wrestler’s stronger motivation would improve performance by comparing actual results with predicted results. In the next match, 7–7 wrestlers win less often than their predicted percentage would suggest, so the evidence does not support the counterclaim. Choice A states this result; doing well against particular opponents would not by itself establish that motivation improves their performance.

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