Experiences are remembered by their peak and their end — not their average.
People do not store an experience as the average of every moment. Memory is dominated by the most intense point — the peak — and the final moment — the end — while length is largely ignored (peak–end rule and duration neglect). Because the remembered feeling drives the decision to return, renew, or refer, those two moments are worth more than the rest of the journey combined.
Figure N2 — Emotional trajectory, with peak and end markedanxiety → delight
Moment 01
The Peak
The single most intense moment, positive or negative. An unplanned negative peak (an error, a wait, a surprise fee) is a memory liability that outweighs dozens of fine moments.
DoDesign a positive peak; remove negative ones.
Moment 02
The End
The emotional note the experience closes on. It is carried forward disproportionately into the next decision — yet endings are usually left to chance.
DoMake cancellation, completion, and support endings intentional.
Ignored
The Average
Duration and the mass of neutral moments barely register in memory. Spreading effort evenly across the journey wastes it.
DoConcentrate investment on the peak and the end.
The science — Kahneman, Fredrickson & Redelmeier established that remembered utility tracks the peak and the end, not the sum. Emotionally charged moments are encoded more strongly (amygdala-modulated memory), and Slovic's affect heuristic shows the remembered feeling — not the ledger of facts — drives the next choice.
Outcome · 01
Peak + End
the two moments that set memory are named and owned instead of left to chance.
Outcome · 02
Retention
a favorable remembered experience lifts renewal and reduces "no-reason" churn.
Outcome · 03
Referral
a designed positive peak is the moment customers actually retell — fueling word of mouth.