Abstract
The classic hedonic treadmill — bounce back to neutrality after good or bad events — needs five revisions: set points are not hedonically neutral, differ by temperament, split across well-being components, can change under some conditions, and adapt at different speeds across people.
Diener, E., Lucas, R. E., & Scollon, C. N. (2006). American Psychologist, 61(4), 305–314. DOI
Key findings
- Not neutral baseline — Individuals’ happiness set points are not stuck at hedonically neutral zero — typical well-being sits above neutral for many people.
- Temperament set points — People carry different set points partly shaped by personality and temperament.
- Multiple set points — Pleasant affect, unpleasant affect, and life satisfaction can move independently — one domain can rise while another flatlines.
- Set points shift — Well-being levels can change under some conditions — adaptation is real but not an absolute return to the old line every time.
- Adaptation speed — Individuals differ in how much they adapt to the same external event — some revise their set point, others do not.
Limits
A synthetic review of Diener-program adaptation research — not one preregistered trial. Event types (marriage, disability, income) show different trajectories; do not read “set points can change” as “every summit leaves you unchanged.”
Application
After a major win or role change, use this as the honest counterweight to both doom (“nothing will ever feel good again”) and fantasy (“I’ll stay on the peak”) — plan fuel for multiple well-being channels and expect person-specific adaptation curves.