Rourke O’Brien is a sociologist and social demographer. His research focuses on the causes and consequences of social and economic inequalities with substantive interests in taxation, household finance, and population health. Current projects examine: the interplay between health and intergenerational economic mobility; inequality, demography and the structure of subnational tax systems; and how social context influences financial decision-making. He is coauthor of Taxing the Poor (UC Press) and his research has appeared in academic journals including the American Journal of Sociology, Social Forces, and Demography and his policy writing has appeared in the New York Times, Los Angeles Times, and Washington Post.