Deliberately considering reasons a favored conclusion could be wrong reduces confirmation bias and overconfidence
2 events · 1 assessment
Assessed Supported
verdict confidence 0.78 · credence 0.80
The claim states the "consider the opposite" strategy from the judgment and decision-making literature, and the core evidence for it is direct and consistent in direction. In the founding experiments, instructions to consider the opposite reduced biased assimilation of mixed evidence, outperforming simple exhortations to be fair and unbiased, and listing reasons contradicting one's chosen answer improved the calibration of confidence, while listing supporting reasons did not. Conceptual replications in other paradigms, notably anchoring, point the same way, and the strategy presupposes the well-documented tendency in which people seeking evidence for a fixed conclusion select confirming and overlook disconfirming evidence. The effect is conditional rather than unconditional. The best-documented boundary is metacognitive: generating many counterarguments can backfire when producing them feels difficult, because the felt difficulty is itself read as evidence for the favored conclusion. Asking for a few counter-reasons helps; demanding many can entrench the original view. Debiasing effects of this family also tend to be modest in size, and their durability outside laboratory tasks, particularly in emotionally or politically charged domains, is less well established. The claim stands as a well-supported tendency with known limits, not a guaranteed remedy; larger preregistered tests of the strategy's size, persistence, and field transfer would sharpen it.
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