noun
optimism bias
A cognitive bias where a person believes they are less likely to experience negative events and more likely to experience positive events compared to others. Used in psychology and everyday contexts.
楽観バイアスがあると、自分の健康リスクを過小評価しがちだ。
When you have an optimism bias, you tend to underestimate your own health risks.
多くの人は楽観バイアスによって、事故に遭う確率を低く見積もる。
Many people, due to optimism bias, underestimate the probability of being in an accident.