<p>Louis Chauvel&nbsp;was appointed Professor of Sociology at the Université du Luxembourg in July 2012 as part of the PEARL programme. He was full professor at Sciences Po between 2005-2012 and an Honorary member of the Institut Universitaire de France (IUF 2003). He earned his Ph.D. at the University of Lille in 1997 and his Habilitation at Sciences Po Paris in 2003. He was Invited Fellow at Berkeley in 2000 and Invited Professor at Columbia University in the City of New York in 2011-2012.<br />His research topics are Social Inequalities and Public Policies, Social Change, Social Stratification and Mobility, Advanced Methodology of social sciences and population studies. His research mainly focuses on social welfare, income and wealth and social change in a comparative perspective. He has been a Member of the Executive Committee of the International Sociological Association since 2006, was the former General Secretary of the European Sociological Association (2005-7), and the former Treasurer of the French sociological association (AFS) (2002-6). He is a Member of the ISA Research Committee on Social Stratification (RC28) and was chair of the research network “Classes, inequalities, fragmentations” of the AFS.</p>