It takes a few years for young brains to acquire the strength and muscularity to perform the mental trapeze act—swinging between past and present and between reality and imagination—that regret demands.[5] That’s why most children don’t begin to understand regret until age six.[6] But by age eight, they develop the ability even to anticipate regret.[7] And by adolescence, the thinking skills necessary to experience regret have fully emerged.[8] Regret is a marker of a healthy, maturing mind.
