As user researchers, we're in the business of understanding (and often trying to change) people's behaviour. While the research we do is an excellent tool for this, we can have even more impact if we stand on the shoulders of the academic giants who spend years trying to understand human behaviour. Behavioural science is the systematic study of human behaviour, and how to change it. It therefore provides us with evidence, theories, frameworks, and methods that can supercharge our user research. In this talk, Rosie will talk about some of these different behavioural science tools, and provide examples of their use in practice.