In December 1999, approximately 50 researchers, policymakers, practitioners, and other specialists in the field of fathers and families convened the Father Poverty and Social Vulnerability Roundtable. This report synthesizes the discussion of the themes of the roundtable and their implications for policymaking, the directions they indicate for future research, and the lessons they impart for practice. The first section of the report contains summaries of the research papers presented, as well as discussants' and participants' commentaries. The second section describes the current and emerging issues in father poverty and social vulnerability that emerged during the roundtable discussions. The third section explores the implications of the issues raised for policymaking. The fourth section offers new directions for research that arose from the discussion. The fifth section describes lessons learned for practice. The document concludes with the roundtable agenda and a list of participants. (KB)