His principal field of research is the social and intellectual history of modern America. Prof. Cassidy's thesis was concerned with aspects of the political culture of the United States in the early twentieth century. He is currently working on a history of the abortion controversy in the United States since the early 1960s, with a particular focus on the origins and evolution of the right-to-life movement. Several of his articles on this topic have already appeared, most notably in the Journal of Policy History. Prof. Cassidy’s expertise in social research helps to guide the Institute’s research process.