Rationality versus Intelligence

“Psychologists have studied the major classes of thinking errors that make people less than rational. They have studied people’s tendencies to show incoherent probability assessments; to be overconfident in knowledge judgments; to ignore the alternative hypothesis; to evaluate evidence with a “my side” bias; to show inconsistent preferences because of framing effects; to over-weigh short-term rewards at the expense of long-term well-being; to allow decisions to be affected by irrelevant context; and many others.

All of these categories of failure of rational judgment and decision-making are very imperfectly correlated with intelligence – meaning that IQ tests tend not to capture individual differences in rational thought.”

More here.

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