About Alan Siaroff Alan Siaroff received his Ph.D. in Political Science from Yale University and is Professor in the Department of Political Science at the University of Lethbridge. He has published widely in various scholarly journals in Europe and North America. Books by Alan Siaroff Comparing Political Regimes A Thematic Introduction to Comparative Politics, Fourth Edition by (author) Alan Siaroff Comparing Political Regimes A Thematic Introduction to Comparative Politics, Third Edition by (author) Alan Siaroff