Dr Chiara Varazzani is Lead Behavioural Scientist at the Organisation for Economic Cooperation and Development (OECD) with the Observatory of Public Sector Innovation (OPSI). Dr Varazzani’s work includes fostering a global community of behavioural experts, helping governments tackle policy challenges and run experiments - to better understand what works, for whom and in what context - and providing expert behavioural advice across many policy areas such as health, climate change, competition, financial decision-making, and misinformation. Dr Varazzani also serves as a member of the Technical Advisory Group on Behavioural Insights for the World Health Organization (WHO). Prior to this, Dr Varazzani held several positions in government: she was Principal Advisor of the Behavioural Insights Unit of the Victorian Government in Australia, Advisor in behavioural economics to the Australian Federal Government, and Research Fellow at the Behavioural Insights Team in London.