Richard Thaler
Citation: For his contributions to behavioural economics.
The key idea
Mental accounting: people treat money as non-fungible across categories. Endowment effect: people value what they own more than what they could acquire. Nudge: small changes in choice architecture (defaults, framing) have large behavioural effects.
The explanation
Thaler's 1980 paper introduced mental accounting. His 1985 work formalised the endowment effect. With Cass Sunstein, Nudge (2008) launched the modern behavioural-public-policy movement: governments worldwide created 'nudge units' (UK Behavioural Insights Team, US OIRA, etc.).
Why Africa should care
Nudging is huge for Africa. Defaults in pension-fund choice (Kenya's NSSF auto-enrolment, Mauritius's NPS), framing in vaccination campaigns, anchoring in savings products (M-Shwari's suggested amounts), social-proof in tax-compliance reminders (KRA's behavioural campaigns) — all are nudge-policy applications. The Ideas42 partnership with African governments and the recent World Bank Mind, Society, and Behaviour report formalise this.
How to use it
When designing any policy that requires public action (save, vaccinate, file tax, enrol child), redesign the default. Opt-out beats opt-in by 10-50x in compliance rates.
Canonical works
- Richard H. Thaler and Cass R. Sunstein (2008) "Nudge: Improving Decisions About Health, Wealth, and Happiness" Yale University Press
- Richard H. Thaler (2015) "Misbehaving: The Making of Behavioral Economics" W. W. Norton
- World Bank (2015) "World Development Report 2015: Mind, Society, and Behavior"
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