Professor Rosenson received her M.A. in Political Science from Yale University and her Ph.D. in Political Science from the Massachusetts Institute of Technology. Her research and teaching interests include political ethics (most specifically, with regard to conflicts of interest), political reform, legislative behavior, comparative state politics, American political development, and media and politics. The main theme animating her research is an interest in understanding democratic accountability, particularly with reference to legislators. Her book Shadowlands of Conduct: Ethics and State Politics(Georgetown University Press, 2005) examined the enactment of conflict of interest laws for legislators in the American states over the past half-century, focusing on the evolution and limitations of such ethics regulation.

Her work has also been published in various journals, including Political Research Quarterly, Public Choice, and State Politics and Policy Quarterly. In addition to her book, Professor Rosenson has written on the impact of campaign finance laws and other political reform measures on perceptions of corruption, the effects of ethics laws on legislative recruitment and the composition of state legislatures, Congressional support for Israel, and privately sponsored Congressional travel. She is currently working on a book manuscript that examines the content and partisanship of House ethics investigations from 1798-2004.