Scientific evidence / Paul C. Giannelli, Distinguished University Professor Weatherhead Professor of Law, Case Western Reserve University School of Law, Cleveland, Ohio ; Edward J. Imwinkelried, Edward L. Barrett, Jr. Professor of Law and Director of Trial Advocacy, University of California at Davis School of Law, Davis, California ; Andrea Roth, Assistant Professor of Law, University of California at Berkeley School of Law, Berkeley, California ; Jane Campbell Moriarty, Carol Los Mansmann Chair in Faculty Scholarship, Professor of Law and Associate Dean for Faculty Scholarship, Duquesne University School of Law, Pittsburgh, Pennsylvania ; Valena E. Beety, Professor Law, Arizona State University Sandra Day O'Connor College of Law, Phoenix, Arizona.