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10 Common Thinking Errors Leaders Make

Mark Sanborn

Examples: A project leader believes their team can complete a complex project in two months, whereas realistic estimates suggest six. Sunk Cost Fallacy Leaders affected by the sunk cost fallacy continue investing in a project based on the amount already invested, rather than evaluating its future value.

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“Leadership Qualities” vs. Competence: Which Matters More?

Harvard Business Review

David Dunning and Justin Kruger at Cornell have great research showing that the least competent people often end up in charge because they’re overconfident about their own abilities.). We studied 49 teams at a publicly held Dutch company; the teams were auditing finances in search of tax evasion and fraud.