The OECD has developed this toolkit in partnership with Dr. Pelle Guldborg Hansen of Roskilde University. The toolkit provides practitioners and policy makers with a step-by-step process for analysing a policy problem, building strategies, and developing behaviourally informed interventions. BI is increasingly used in policy making to improve understanding of how context, biases and other influences affect the behaviour of people and organisations. The BI approach is evidence-driven, focussing on understanding what actually drives the decisions of citizens, rather than relying on assumptions of how they should act. In doing so, it helps ensure that policies reflect real needs and behaviours for greater impact and effectiveness.