The Hedonic Treadmill — Happiness Returns to Baseline
Brickman & Campbell (1971) · Hedonic Relativism and Planning the Good Society (1971)
People rapidly adapt to both positive and negative changes in circumstances, returning to a relatively stable baseline of happiness. Lottery winners aren't significantly happier than controls. This means pursuing happiness through external achievements or acquisitions is largely futile — the boost is temporary, the baseline reasserts.
Core Concepts
The Problem
People assume that reaching the next milestone — the promotion, the house, the income level — will make them lastingly happier. They organize their lives around this assumption. The hedonic treadmill explains why it doesn't work: each achievement becomes the new normal, and the happiness fades.
The Claim
Brickman and Campbell coined the term in 1971. Their landmark 1978 study compared 22 lottery winners, 29 paralyzed accident victims, and controls. Finding: lottery winners were not significantly happier than the control group. Accident victims were not as unhappy as expected.
The mechanism: people have a happiness 'set point' that is at least partially heritable. External events push happiness above or below the set point temporarily, but adaptation pulls it back. This applies to:
- **Income gains** — above a moderate threshold, more money produces diminishing happiness returns - **Material purchases** — today's luxury is tomorrow's baseline (Housel: "luxury quickly becomes a necessity") - **Status achievements** — the promotion feels great for weeks, then becomes normal - **Negative events** — people adapt to disability, loss, and setbacks better than they predict
Diener, Lucas, and Scollon's 2006 revision ("Beyond the Hedonic Treadmill") added nuance: people aren't hedonically neutral, individual set points differ, and adaptation isn't complete for all events (chronic pain, unemployment, and loss of a spouse show incomplete adaptation). But the core finding holds.
The implication connects directly to Frankl: if happiness through acquisition is temporary, then meaning — not happiness — is the more durable pursuit.
Key Evidence
- •Brickman & Campbell (1971): coined 'hedonic treadmill' in Hedonic Relativism and Planning the Good Society
- •Brickman, Coates & Janoff-Bulman (1978): lottery winners not significantly happier than controls
- •Diener, Lucas & Scollon (2006): revised model — set points differ, adaptation isn't complete for all events
- •Replicated across income studies, material purchases, status changes, and health events
- •The concept is foundational in positive psychology and behavioral economics
Practical Implication
Stop organizing your life around the next external achievement as if it will make you lastingly happier. It won't — the treadmill will reset. Invest instead in things that research shows resist adaptation: relationships, meaning, flow states, and gratitude practices.
Nuance & Limits
The original study had small sample sizes (22 lottery winners). The 2006 revision showed the treadmill isn't absolute — some events (chronic unemployment, loss of a spouse) produce lasting unhappiness. Individual set points vary and are partly genetic. The concept also risks becoming fatalistic ('nothing matters') when the actual implication is 'pursue the right things.'
Source Material
Citation Density
Very high — foundational concept cited across psychology, behavioral economics, and self-improvement. Referenced by Housel, Brooks, Ferriss, and virtually every discussion of happiness and wealth.
Related Ideas
If happiness through acquisition is temporary (hedonic treadmill), then meaning is the more durable pursuit (Frankl)
Relationships are one of the few things that resist hedonic adaptation — they produce lasting satisfaction
Alcohol is a hedonic shortcut that the treadmill quickly neutralizes — tolerance is adaptation in chemical form