Sara Calligaris is an Economist in the Directorate for Science, Technology and Innovation at the OECD. Her research interests lie in the area of industrial organization and applied microeconometrics, with main focus on productivity, concentration and the role of the digital transformation. Her research has been published in academic journals including Economic Policy and AEA Papers and Proceedings. Sara holds a Ph.D. in Economics from the University of Rome "Tor Vergata". During her Ph.D. she has participated to the Graduate Program at the Einaudi Institute for Economics and Finance (EIEF) and has been Visiting Student Research Collaborator at the University of Princeton. Before starting the Ph.D. in 2012, Sara completed a M.Res. in Economic Theory and Econometric at the Toulouse School of Economics (TSE).