No. 74 · People · Heuristics and Bias
Peak-end Rule
We remember an experience by its most intense moment and its ending, not by its length.
In the Almanac
“Baggio’s penalty”, 1994 · “Ritz-Carlton”, 2012
Both stories in full, three ways to use it and where it misleads.
Get the AlmanacQuestions
What is Peak-end Rule?
The Peak-end Rule describes how we remember experiences. Instead of averaging every minute, our memory focuses on the most intense moment, good or bad, and on how things ended, while largely ignoring duration.
How do you avoid Peak-end Rule?
Use it to design better experiences. End work days with a satisfying task, finish workouts gently, and close disagreements with warmth. Invest in a few memorable highs and graceful endings. Just remember that steady everyday quality still matters, even if memory overlooks it.
When does Peak-end Rule matter?
Peak-end Rule is one of the 60 mental models for people, the situations where you ask: Why do people act as they do, and how do I work with them? Within that, it belongs to “Understanding people”, alongside Frame of Reference, High Context vs Low Context and Introverts vs Extroverts.
What is an example of Peak-end Rule?
Two stories show it at work: Baggio’s penalty (1994) and Ritz-Carlton (2012). Both are told in full in The Mental Models Daily Almanac, which has two stories for each of its 365 models.
Which mental models are related to Peak-end Rule?
Framing, Availability Bias and Narrative Instinct. Peak-end Rule itself comes from heuristics and bias.