European Study of 3,000 People: AI Makes Humans Overconfident and Less Accurate

FuSheng_0306 · x · 2026-07-30

Three European universities conducted a cognitive experiment with over 3,000 participants to investigate AI's impact on human decision-making psychology.

Key Findings: Without AI assistance, 40% of respondents honestly chose "I don't know" when facing uncertain questions. However, once AI was introduced, very few admitted ignorance; while the actual accuracy rate dropped significantly, participants' self-confidence surged.

The author echoes this with corporate management observations, noting that employees often submit poorly structured AI-generated reports and quickly blame the AI when flaws are pointed out. The author argues that acknowledging boundaries is the only way to break them, and self-awareness is humanity's most valuable trait in the AI era.

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