Randomised experiment: If you’re genuinely unsure whether to quit your job or break up, then you probably should

One of my favourite studies ever is ‘Heads or Tails: The Impact of a Coin Toss on Major Life Decisions and Subsequent Happiness’ by economist Steven Levitt of ‘Freakonomics’.
Levitt collected tens of thousands of people who were deeply unsure whether to make a big change in their life. After offering some advice on how to make hard choices, those who remained truly undecided were given the chance to use a flip of a coin to settle the issue. 22,500 did so. Levitt then followed up two and six months later to ask people whether they had actually made the change, and how happy they were out of 10.
People who faced an important decision and got heads – which indicated they should quit, break up, propose, or otherwise mix things up – were 11 percentage points more likely to do so.
It’s very rare to get a convincing experiment that can help us answer as general and practical a question as ‘if you’re undecided, should you change your life?’ But this experiment can!
I wish there were much more social science like this, for example, to figure out whether or not people should explore a wider variety of different jobs during their career (for more on that one see our articles on how to find the right career for you and what job characteristics really make people happy).
The widely reported headline result was that people who made a change in their life as a result of the coin flip were 0.48 points happier out of 10,
















