Peak-End Rule
Edited by Paweł Raja, PhD · Published · Updated
Definition
Peak-End Rule is the heuristic where people judge an experience largely based on how they felt at its peak (its most intense point) and at its end, rather than the total sum of the experience.
Peak-End Rule examples
Patients undergoing painful colonoscopies rated the procedure as less painful overall if the medical team left the static scope in for an extra, painless minute at the end.
- A holiday is remembered by its best afternoon and its farewell dinner more than by its overall length.
- A support call that ends warmly is rated highly even when most of it was slow.
How to design for it (nudge strategy)
Design digital experiences to end on a high note, such as celebratory confetti upon completion or a small, pleasant bonus at checkout.
Ethical use: design for choices people would endorse on reflection — a nudge, not sludge. Be transparent and keep opting out easy.
The evidence (1)
- Residential Energy Conservation via Neighbor Benchmarks
Energy · Percentage Household Energy Savings: 0.1% → 2.1% (+2.0 pts) · n = 600,000 households
Related biases
Cite this page
Behavioral Economics Lab. "Peak-End Rule – Definition, Examples & Evidence." Behavioral Economics Lab, https://www.behavioraleconomicslab.com/biases/peak-end-rule.