The Power of Moments: Why Certain Experiences Have Extraordinary Impact

by Chip Heath

For their third painful experience, the participants were given a choice: Would you rather repeat the first trial or the second? This is an easy question: Both trials featured 60 seconds of identical pain, and the second trial added another 30 seconds of slightly reduced pain. So this is kind of like asking, Would you rather be slapped in the face for 60 seconds or 90? Nevertheless, 69% chose the longer trial. Psychologists have untangled the reasons for this puzzling result. When people assess an experience, they tend to forget or ignore its length—a phenomenon called “duration neglect.” Instead, they seem to rate the experience based on two key moments: (1) the best or worst moment, known as the “peak”; and (2) the ending. Psychologists call it the “peak-end rule.” So in the participants’ memories, the difference between 60 and 90 seconds washed out. That’s duration neglect. And what stood out for them was that the longer trial ended more comfortably than the shorter one. (Both trials, by the way, had a similar peak moment of pain: close to the 60-second mark.) This research explains why, in reflecting on your Disney experience, you’ll remember Space Mountain (the peak) and the mouse ears (the end). Everything else will tend to fade. As a result, your memory of the day is far more favorable than the hour-by-hour ratings you provided.