The Psychology Index

The Psychology Index is an independent reference, written from scratch in plain English.

Emotion and wellbeing

Broaden-and-build theory

The broaden-and-build theory, developed by Barbara Fredrickson, proposes that positive emotions temporarily widen what people think and do, and that this builds lasting personal resources over time.

Broadening

Negative emotions such as fear are said to narrow people's focus toward a specific action, such as escape. Positive emotions such as joy and interest are thought to do the opposite, encouraging play, exploration and a wider range of ideas. Experiments have linked induced positive emotion with a broader scope of attention.

Building

Repeated positive experiences are proposed to build lasting physical, social and psychological resources. In one field experiment, loving-kindness meditation increased daily positive emotions, and those increases predicted gains in a range of resources over time.

Contested claims

Associated claims have not all survived scrutiny. A published 'critical positivity ratio', said to mark a tipping point for flourishing, was shown to rest on invalid mathematics and was partially withdrawn. The broader theory does not depend on that ratio, but later research has found that the broadening effect is not universal, and that some positive emotions appear to narrow attention.

Further reading

  • Fredrickson, B. L. (2001). The role of positive emotions in positive psychology: The broaden-and-build theory of positive emotions. American Psychologist, 56, 218-226.
  • Fredrickson, B. L., & Branigan, C. (2005). Positive emotions broaden the scope of attention and thought-action repertoires. Cognition and Emotion, 19, 313-332.
  • Brown, N. J. L., Sokal, A. D., & Friedman, H. L. (2013). The complex dynamics of wishful thinking: The critical positivity ratio. American Psychologist, 68, 801-813.