Case file
Peak-End Rule
- Filed under
- What Should We Remember
The charge
The peak-end rule is the tendency to judge an experience mainly by its most intense moment and how it ended, rather than by its total duration or average quality. Memory compresses long episodes into a few standout points.
How it operates
Episodic memory favors highly emotional or distinctive moments, and endings are especially available during later evaluation. These moments become retrieval anchors that substitute for the full experience.
Logged incidents
- Incident 01
Customers rate a support interaction largely by the worst moment and the final resolution, not the full 40-minute exchange.
- Incident 02
Employees remember a quarterly planning offsite mainly by one tense conflict and the upbeat closing speech.
- Incident 03
Users describe a product onboarding flow by the moment they got stuck and the final success screen, overlooking many middling steps.
What to watch for
When evaluating an experience, check whether a few moments are standing in for the whole. Ask: "Am I rating the full journey, or just the peak and the ending?"
Recommended action
Measure experiences across multiple touchpoints, not only overall satisfaction. Use moment-by-moment experience sampling or journey mapping to capture the full distribution of the experience.
Known associates
- Leveling and SharpeningLeveling and sharpening describes how memories and retellings simplify some details while exaggerating others.
- Misinformation EffectThe misinformation effect is the distortion of memory after exposure to misleading post-event information.
- Serial-Position EffectThe serial-position effect is the overall tendency to remember items at the beginning and end of a sequence…
- Duration NeglectDuration neglect is the tendency to pay too little attention to how long an experience lasted when later…
- Modality EffectThe modality effect is the tendency for memory performance to differ depending on whether information is…
- Memory InhibitionMemory inhibition refers to the suppression or reduced accessibility of some memories when others are…
Source of record