Peak-End Rule
Retrospective evaluations can be influenced disproportionately by intense moments and endings.
The Mechanism: The peak-end rule describes findings that retrospective evaluations can depend strongly on the most intense moment and the ending. Its influence varies with experience and measurement; duration is not always ignored.
The Philosophical Pivot: We remember a life through selected moments rather than replaying it evenly. The remembered version can guide future choices even when it differs from the full experience.
The Horizon: Designers and institutions can shape experiences by attending to endings and intense points. This knowledge can improve care, but it can also be used to manipulate evaluations without improving the whole journey.
A memorable ending matters, yet it does not erase the middle. Good judgment may require preserving a record of what happened across the entire experience.
Memory edits time into a story whose emotional shape can become more influential than its length.
The ending can color the memory without containing the whole experience.
Which intense moment is dominating my judgment of an experience that was longer and more complicated?