hedonic treadmill: a standalone construct

Philip Brickman and Donald Campbell introduced the idea in their 1971 chapter Hedonic relativism and planning the good society, arguing that people judge each new gain or loss against their own recent experience, so pleasures fade as they become the new normal and a person drifts back toward a roughly constant level of satisfaction. Brickman, Coates, and Janoff-Bulman gave the idea its best known evidence in a 1978 study that compared lottery winners with people paralysed in accidents and found the two groups reported happiness far closer than the size of their fortunes would suggest. The picture names a moving reference point: like walking on a treadmill, effort that raises circumstances is offset by a rising standard of comparison, so the felt distance to contentment stays about the same. What makes it a landmark in positive and affective psychology is that it reframes happiness as a relative, self-adjusting quantity rather than a stock that accumulates with good fortune, and it set the agenda for later work on how far, how fast, and for which events people actually adapt. A separate refinement by Diener, Lucas, and Scollon in 2006 revised the strong version, reporting that baselines differ across individuals and can shift after major life changes, so the return is often partial rather than complete.[1][2][3]

Unit

A relative level of subjective happiness measured against a shifting personal baseline

Recovery means

Not applicable

Measured by

Assessed through self-reported happiness or life-satisfaction scales tracked over time, with adaptation inferred from the return toward baseline after a gain or loss