Peak-End Rule
01 Definition
Peak-End Rule meaning: People judge an experience mainly by its most intense moment and how it ended.
The Peak-End Rule is a psychology finding that says people remember an experience based on its emotional high or low point and its final moment, rather than the average of every step. Designers use it to strengthen key moments and the ending. Remembered satisfaction can differ from real-time comfort.
Why it matters
How Peak-End Rule fits the work
It helps teams focus limited effort on the moments that shape how users recall a product, such as a smooth checkout finish or a rewarding signup completion.
In context
A support tool ends every chat with a clear summary and a friendly thank-you, so users recall the help as positive even after a slow start.
Practical note
It describes remembered experience, not moment-to-moment comfort, so it does not excuse a painful middle. Fixing frequent frustrations still matters even when the peak and ending feel good.