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peak_end_rule
The peak-end rule is a cognitive bias in which people judge an experience largely based on how they felt at its most intense moment (the peak) and at its end, rather than on the average of every moment of the experience. Duration of the experience has remarkably little impact on the overall remembered evaluation.
A vacation that includes one amazing day (the peak) and ends with a pleasant final dinner (the end) is remembered more favorably than an evenly pleasant vacation, even if the first trip included several bad days in between.
A patient undergoes a lengthy, uncomfortable medical procedure. The final few minutes are handled with exceptional care and warmth by the nurse. Afterward, the patient tells friends it 'wasn't that bad,' largely because of how it ended.
A concert-goer endures long lines, overpriced drinks, and mediocre opening acts, but the headliner closes with a breathtaking, emotional performance. Months later, the concert is remembered as one of the best nights of the year.
Binary (yes/no) questions an LLM must answer to identify this aspect:
Is an experience or event being evaluated retrospectively?
Type: binaryIs the evaluation dominated by the most intense moment and/or the ending?
Type: binaryIs the overall duration or average experience being neglected?
Type: binaryThe peak-end rule is a cognitive bias in which people judge an experience largely based on how they felt at its most intense moment (the peak) and at its end, rather than on the average of every moment of the experience. Duration of the experience has remarkably little impact on the overall remembered evaluation.
Memory is reconstructive, not a complete recording. The brain uses heuristic sampling of peak intensity and final moments as efficient proxies for evaluating entire experiences, discarding the moment-by-moment detail of the full duration.
When evaluating past experiences for future decisions, keep a diary or log of your actual moment-by-moment satisfaction rather than relying on overall memory. Be aware that endings disproportionately color your memory.
Hospitals that ensure patients' final moments of a procedure are less painful receive better satisfaction scores. Customer service teams are trained to end interactions on a high note. Theme parks place the best rides near the exit.
Use these tools to detect, analyze, or train this aspect.