Kitty Stewart is Professor of Social Policy at the London School of Economics and Political Science, and Associate Director of LSE’s Centre for Analysis of Social Exclusion. She has a PhD in Economics from the European University Institute, Florence, and worked at UNICEF Innocent Research Centre before joining LSE in 2001. Her current research interests are focused on the causes and consequences of child poverty, the relationship between income and wider outcomes, and policy for young children. Together with colleagues at the Universities of York and Oxford she recently completed a large mixed methods research project examining the impact of the two-child limit and the benefit cap, funded by the Nuffield Foundation. Further details and publications can be found on the project website www.largerfamilies.study.