This is a Lexicon entry: the mechanism, when it shows up, and the countermeasure. The full correction, with real-world cases and the audit prompt, hasn't been written yet.
Definition
Primary concept: Loss Aversion. This entry examines a specific dimension; see Loss Aversion for the broader mechanism.
When it shows up
Decisions between acting and not-acting where both have consequences: vaccinating a child versus not, intervening in a conflict versus not, changing investment allocation versus holding. Modern context: A platform that fails to remove misinformation is judged less harshly than a platform that removes accurate information - even when the harm from the misinformation failure is demonstrably larger. The action/inaction asymmetry dominates the harm calculation.
Failure mode
Harm caused by acting feels worse than equivalent or greater harm caused by not acting. The asymmetry produces inaction when action was the better choice, because the mind treats inaction as default-neutral even when its consequences are bad.
Countermeasure
Lay out both paths' expected outcomes without labeling one as 'action' and the other as 'inaction'. Treat both as decisions with consequences. Failure to act is also a choice. When correction costs more than the bias: When inaction is genuinely less harmful than intervention: many medical conditions resolve without treatment and well-intentioned intervention causes harm. Omission bias is adaptive in situations where natural recovery is likely and intervention risk is high. It is a problem when inaction clearly causes harm and intervention would not.
Related traps
Also connected in the map5 more, locked
Credit & first seen
DiscoveredSpranca, M., Minsk, E.&Baron, J. (1991).'Omission and commission in judgment and choice.'Journal of Experimental Social Psychology 27(1), 76-105 source ↗
Also revealed
Entry #69 of 631 in The Lexicon · see the full Lexicon