Donor: European Commission, 7th framework programme. Coordinator: Prof. Dr. Gianni Toniolo, Univerisität Tor Vergata, Rome. Partners: CEPR, FAO, Free University Brussels, HWWI, Katholic University Mailano, IAB, LSE, UCL, University Lille II, University Louvain-la-Neuf, University Riga, University Tor-Vergata Rome, University Turin, WTO Begin/end date: 2006-2010 The project is research and training network (RTN) which is funded by the 7th framework programme of the EU. The project tempts to connect excellent academic research with the exchange of young and experienced researchers across Europe. The project examines several aspects of transnational networks of migrants between sending and destination countries. The research of IAB focuses in the causes and consequences of the brain drain and brain gain in sending and destination countries and on the labour market effects of migration. About 40 researchers from 18 universities and other research centres participate in the project.