Roger Penn is currently a Professor of Sociology at Queen's University Belfast. He is a member of the Academy of the Social Sciences, and recently a Visiting Professor at University of California, Los Angeles (UCLA) and at the University of Bologna. He is the author of 14 books, including Skilled Workers in the Class Structure, Class, Power and Technology, Social Change and Economic Life in Britain and Children of International Migrants in Europe, and the Editor of two SAGE Series: Statistical Analysis of Continuous Data (four volumes) and Social Statistics (four volumes). He has a long-standi...