# How Not to Investigate an Accident

*Kletz · Safety & Error, Measurement & Method · Loss Prevention Bulletin · 2011 · Open access*

Lists eight errors accident investigators commonly make, with the worst being confirmation bias — forming a hypothesis and seeking only supporting evidence. Argues that blaming human error and individuals obscures systemic causes, and that reports lacking concrete actions are worthless. A practical, pointed guide to what passes for investigation but isn't.

- **This page:** https://explore.psychsafety.com/n/kletz-2011/
- **View the source paper:** https://www.icheme.org/media/9290/xxii-paper-80.pdf
- **Interactive map:** https://explore.psychsafety.com/?mode=papers&node=kletz-2011

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