It’s been 15 years since a particular concept of behavioural science went mainstream. “Nudge theory”, the notion that our behaviour can be successfully influenced through “soft” interventions, has subsequently appealed to plenty of people seeking to change the way we live.
The 2008 book which set out the idea – Nudge: Improving Decisions about Health, Wealth and Happiness – sold more than 2 million copies. But its influence went way beyond sales figures.
