Why Painful Experiences Are Judged by Their Final Few Seconds

Psychology Wonders #1

The Takeaway

How we remember an experience is not decided by how long it lasted or by the total amount of misery it contained. It is decided by the worst moment — the peak — and by the final moment — the end.

Maybe you have had a trip you genuinely enjoyed, only to run into trouble on the way home and end up remembering it as “kind of a disappointing trip, actually.”

Or the reverse: a tough journey that ended with one delicious meal, leaving you feeling it was “a great trip after all.”

Many people will recognise the feeling. And it turns out this is not just a quirk of memory — it is a phenomenon that has been clearly reproduced in experiments. It is called the peak-end rule.

In 1993, psychologist Daniel Kahneman and his colleagues ran the following experiment. Participants put their hands in cold water, twice, under two different conditions:

• The short trial: a hand in water at 14°C for just 60 seconds
• The long trial: a hand in water at 14°C for 60 seconds, then kept in for a further 30 seconds in water warmed slightly, to 15°C

The long trial is simply the short trial with extra discomfort added on. In total, the long trial is unquestionably the more unpleasant of the two.

And yet, when participants were asked which trial they would rather repeat, 22 out of 32 people (69%) chose the long one.

Just because it ended slightly less badly, the experience with more total suffering was remembered as “not so bad.”

The reason is that memory does not record events in full, like a video. The brain saves only snapshots — the scenes that left the strongest impression.

At the centre of that selection are the most intense moment and the final moment. Duration barely factors into the evaluation at all. This is known as “duration neglect.”

That is why the misery you feel while something is happening and the misery you feel when you look back on it can be two quite different things.

This rule is not all bad news. When something is coming to an end, improving just the ending can change how the whole experience is remembered.

The flip side is that if we judge events by memory alone, we can end up underestimating how hard the time in between actually was.

Memory is not a total score. It is a snapshot of the peak and the end. Just knowing that lets you look at your own memories with a little healthy suspicion.

References

• Kahneman et al., “When More Pain Is Preferred to Less: Adding a Better End” (Psychological Science, 1993)
• Fredrickson & Kahneman, “Duration Neglect in Retrospective Evaluations of Affective Episodes” (Journal of Personality and Social Psychology, 1993)