Dr Chiara Varazzani is a behavioural science expert having set up and led units of behavioural scientists in government, designed behaviour change interventions and shaped communication across different areas, including health, education, financial decision-making, energy and international development. Today, Dr Varazzani is the Lead Behavioural Scientist at the Organisation for Economic Cooperation and Development (OECD). Chiara also serves as a member of the Technical Advisory Group on Behavioural Insights for the World Health Organization (WHO) and she is an Adjunct Research Fellow at Monash University. Prior to this, Dr Varazzani held several positions in government. She was the Principal Advisor of the Behavioural Insights Unit of the Victorian Government in Australia, Senior Executive Advisor in behavioural economics to the Australian Federal Government and Research Fellow at the Behavioural Insights Team in London. She holds a PhD in Behavioural Neuroscience from Sorbonne University, a MSc from the School for Advanced Studies in Social Sciences and a MSc in Cognitive Sciences from the École Normale Supérieure.