Definitionv1DF-354
Hindsight bias
the systematic distortion of memory where people overestimate how predictable an outcome was from the start once they know what happened, causing them to reconstruct their past beliefs and reasoning in light of new information
Why This Is a Definition
This definition clearly names the term, places it in the category of memory distortion, and precisely describes its mechanism (overestimating predictability after outcome knowledge) and effect (reconstructing past beliefs in light of new information).