Working inside the world's first Nudge Unit, Owain Service and Rory Gallagher know the huge impact that small changes, based on a scientific understanding of human behavior, can have, whether you're trying to save money, be a better manager or get more people to vote in the next election. For the first time, Think Small takes these successful approaches and translates them into an easy, simple framework that has the potential to make a big difference to all our lives.