David S. CordrayDavid S. Cordray is Professor of Public Policy and Professor of Psychology in Vanderbilt′s Peabody College. Professor Cordray′s research has focused on estimating the numerical effects of social interventions directed at-risk populations (e.g. homeles, substance abusers). In addition to conducting multi-site evaluations of intervention programs, he has contributed to the development of methodological refinements of quasi-experimental designs, meta-analysis, and non-traditional forms of causal inquiry. Read More Read Less