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This book addresses some of the many social challenges created by migration flows over the past decades. The volume brings together research from three different fields: economics, sociology and political science.

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The changing economic reality of the last decades has prompted large movements of people across and within national borders, which, in turn, have given rise to new opportunities and challenges. This volume addresses a number of key aspects of these developments, by bringing together a unique collection of chapters, written by leading scholars from three different disciplines: economics, sociology, and political science.

The first part of the book - Economic Change - starts with two case studies: The mass migration from the former Soviet Union to Israel in the early 1990s, and the mass migration from rural to urban areas in China that started in the mid 1990s. The final chapter of the first part provides a thorough introduction and overview into methodologies that can help to address numerous issues faced by researchers working with migration data, of the type underlying the analysis in the first two chapters.

The second part of the book - Social Challenge - discusses how societies are shaped by immigration. It investigates the pitfalls of policies that do not take account of the implications for decisions of individual migrants; explores the important aspect of family re-unification and discusses whether society should follow a path towards a multicultural society or a society that forces newcomers to adopt existing cultures. Finally, this volume ponders whether the diversity created through
migration impacts negatively on the societal structure of the receiving countries.

These chapters together, written by some of the foremost experts in the areas, provide intriguing insights into the complexity of migratory phenomena and the challenges to policy and society at large.

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Christian Dustmann is Professor at the Department of Economics, University College London. He is Director of CReAM, the Centre for Research and Analysis of Migration and has been the scientific Director of the NORFACE programme on migration. Professor Dustmann has been the President of the European Society of Population Economics (2008), and he is the incoming President of the European Association of Labour Economists (EALE, 2014-2017). He is a leading expert on
migration, and he has published extensively on this subject. He has also written numerous reports on migration related issues for UK government bodies and international institutions, and he frequently advises government institutions, the media, and specialised user groups on migration related issues. His
other research interests are in population economics, labour economics, education economics, and the economics of crime.

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