MARYBETH SHINN, PHD, is a Cornelius Vanderbilt professor at Vanderbilt University. She co-led the Family Options Study of different approaches to ending family homelessness, evaluated the initial study of the Pathways Housing First experiment, and developed a model used by New York City to target its homelessness prevention services. JILL KHADDURI, PHD, is a principal associate and senior fellow at Abt Associates. She co-leads the Annual Homeless Assessment Report (AHAR), has played leading roles in several important studies of both homelessness and housing policy for two decades, and served as Director of the Policy Development Division of the Department of Housing and Urban Development.