People Think They Already Know Everything They Need To Make Decisions

New research challenges assumptions about decision-making, revealing people tend to believe they have sufficient information regardless of actual data at hand. A study by Gehlbach, Robinson, and Fletcher, published earlier this month, found participants consistently overestimated their knowledge when given partial information on a hypothetical school merger scenario.

Nearly 90% favored merger when presented pro-merger facts, while only 25% did when given opposing data. However, opinions shifted when full information was provided, suggesting malleability of views despite initial overconfidence. Researchers caution this bias could be exploited in today's fractured media landscape, where partial or misleading information often circulates unchecked.

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