People quickly return to a baseline level of happiness despite major life events
Hedonic adaptation causes the emotional impact of both triumphs and setbacks to fade over time.
In short
Hedonic adaptation means that people rapidly adjust to changing life circumstances, making the impact of both successes and setbacks on well-being temporary. Although genetic factors establish an individual baseline level of happiness, research indicates that varied experiences and active appreciation can slow down adaptation to positive changes.
The excitement of a promotion or the distress of a breakup rarely lasts forever. Over time, intense emotional reactions fade, and well-being tends to return toward its usual baseline. Psychologists refer to this as hedonic adaptation—a process through which people quickly adjust to new circumstances, providing resilience during setbacks but also causing the joy of positive changes to abate.
The hedonic treadmill and biological baselines
The term "hedonic treadmill" was introduced by Philip Brickman and Donald Campbell in 1971 to describe how individuals return to a stable baseline of well-being following major life events. Research in behavioral genetics suggests that 30 to 50 percent of the variance in reported happiness is attributable to genetic factors. This biological baseline acts as an anchor to which emotional states return once the initial reaction to an event subsides.
"Man is a pliant animal, a being who gets accustomed to anything." – Fyodor Dostoyevsky
Relative income and material adaptation
Habituation to material improvements typically occurs rapidly. A classic 1978 study by Brickman demonstrated that 18 months after winning, lottery winners reported levels of well-being similar to non-winners. Furthermore, macroeconomic data show that substantial long-term gains in national income rarely translate into corresponding increases in population happiness.
Mechanisms and ways to sustain well-being
The Hedonic Adaptation Prevention (HAP) and HAPNE models, developed by Kennon Sheldon and Sonja Lyubomirsky, describe two main adaptation pathways: declining positive emotions from a change and rising aspiration levels that redefine normal. The authors identify two key moderators capable of slowing down this habituation: active appreciation of current circumstances and ongoing variety in change-related experiences.
Individual variation in adaptation trajectories
Although returning to a baseline represents the modal pattern across populations, individual variation is substantial. Longitudinal research by Anthony Mancini, George Bonanno, and Andrew Clark shows that major events like divorce, marriage, or bereavement do not produce identical trajectories. While many people remain stable, others experience lasting shifts in long-term well-being.
Sources
- [PDF] Hedonic Adaptation to Positive and Negative Experiences — Uccs
- [PDF] The Challenge of Staying Happier: Testing the Hedonic Adaptation ... — Berkeley
- [PDF] Stepping Off the Hedonic Treadmill — Columbia
- Psychology, Stress, Lifestyle, and Health, The Pursuit of Happiness — Texas
- Din lycka beror delvis på dina grannar - Compricer — Compricer
Reflection exercises
Use these exercises to apply the chapter's ideas. You don't need to write anything down — just pause and reflect on each question.
Reflections on goals and daily life
Consider how adaptation mechanisms influence your priorities and experiences.
- Which past achievements or purchases brought initial joy but now feel entirely ordinary?
- How can you introduce greater variety and active appreciation into aspects of life you already value?
- In what ways do social comparisons affect your perception of your own progress?