Peter H. Rossi (1921-2006) was professor of sociology emeritus at the University of Massachusetts-Amherst, director of research at the Social and Demographic Research Institute, and past president of the American Sociological Association. Known as one of the most eminent of American social scientists, Rossi authored over forty books and two hundred scholarly articles. His works include Down and Out in America: The Origins of Homelessness; Just Punishments: Federal Guidelines and Public Opinion Compared; Natural Hazards and Public Choice;and Armed and Considered Dangerous.James D. Wright is provost distinguished research professor in the department of sociology at the University of Central Florida. He also serves as director of the University of Central Florida Institute for Social and Behavioral Sciences, and as editor-in-chief of the journal Social Science Research. He has published more than a dozen books, including Armed and Considered Dangerous and Under the Gun as well as many journal articles. His current research interests include violence, urban poverty and inequality, health and the homeless population, and the “divorce reform” movement.