Ettore Recchi is a Professor of Sociology at Sciences Po (Paris) and part-time Professor at the Migration Policy Centre of the EUI (Florence). Adrian Favell is Chair in Sociology and Social Theory at the University of Leeds. Fulya Apaydin is an Assistant Professor at Institut Barcelona d'Estudis Internacionals (IBEI). Roxana Barbulescu is Academic Fellow in New Migrations in UK and Europe at the School of Sociology and Social Policy of the University of Leeds. Michael Braun is a Project Consultant at GESIS - Leibniz Institute for the Social Sciences and Adjunct Professor at the University of Mannheim. Irina Ciornei is an Assistant Professor in the Institute of Sociology at the University of Bern. Niall Cunningham is an Assistant Professor in the Geography Department at Durham University. Juan Díez Medrano is a Professor of Sociology at the Universidad Carlos III de Madrid. Deniz Duru is a Postdoc and Assistant Professor at the Media, Cognition and Communication Department at the University of Copenhagen. Laurie Hanquinet is Senior Lecturer and Deputy Head of the Department of Sociology at the University of York. Janne Solgaard Jensen is head of section at the Independent Research Fund Denmark. Steffen Pötzschke is Research Associate at the department Survey Design and Methodology (SDM) at GESIS - Leibniz Institute for the Social Sciences. David Reimer is Professor in Educational Sociology at Aarhus University. Justyna Salamo?ska is Deputy Director at the Centre of Migration Research and an Assistant Professor at the Institute of Sociology (University of Warsaw). Mike Savage is Professor of Sociology at the London School of Economics. Albert Varela is a Lecturer in Quantitative Methods in the School of Sociology and Social Policy and the Q-Step Centre at the University of Leeds.