Set-point theory of happiness
Also known as: Happiness set point
Each person has a baseline happiness they keep returning to.
What it means
Set-point theory holds that each individual has a characteristic baseline level of happiness, largely determined by genetics and stable personality, around which well-being fluctuates but to which it tends to return after major life events. It builds on findings that lottery winners and people who become disabled drift back toward their prior levels via hedonic adaptation, implying that circumstances have surprisingly limited long-run effects. The strong version — that the set point is essentially fixed — has been revised: long-running panel studies show that some events (such as lasting unemployment, disability, or widowhood) can durably shift baselines, and set points can move over years. It matters because it frames a central debate about how much we can durably raise happiness, tempering both fatalism and naive optimism about life changes.
Examples
A year after a thrilling promotion, a person's day-to-day happiness has largely settled back to where it was before.
Six months after moving to a sunnier city, the daily lift has faded and life feels much as it did before, because the weather stopped registering once it became ordinary.
Not everything bounces back: long-running panel studies find that spells of unemployment can leave life satisfaction lower even after someone is working again, shifting the baseline itself.
First described in Brickman & Campbell (1971); revisions by Lucas, Diener and colleagues.