Lee Epstein (PhD, Emory University) is the University Professor of Law & Political Science and the Hilliard Distinguished Professor of Law at the University of Southern California. She is a fellow of the American Academy of Arts and Sciences and the American Academy of Political and Social Science. A recipient of 12 grants from the National Science Foundation, Epstein has authored or co-authored more than 100 articles and essays and 18 books. She is currently co-editing The Oxford Handbook of Comparative Judicial Behaviour. Professor Epstein’s empirical research is frequently cited in the New York Times, among other news media. Jeffrey A. Segal is SUNY Distinguished Professor and Chair of the Political Science Department at Stony Brook University. He is coauthor of eight books, including Advice and Consent: The Politics of Judicial Appointments (2005), with Lee Epstein; The Supreme Court and the Attitudinal Model Revisited, with Harold J. Spaeth (2002), the original edition of which won the 2005 Wadsworth Award for a book that has made a lasting influence on the field of law and courts; and Majority Rule or Minority Will: Adherenceto Precedent on the U.S. Supreme Court (1999), also with Harold J. Spaeth, which won the C. Herman Pritchett Award for best book on law and courts. He was a 2011–2012 Guggenheim Foundation grant winner and spent that year as a senior research fellow at the Center for the Study of Democratic Politics at Princeton University. Harold J. Spaeth is Distinguished University Professor Emeritus at Michigan State University, and Research Professor at the University’s College of Law and in the Institute for Public Policy and Social Research. He is the recipient of a lifetime achievement award from the Law and Courts section of the American Political Science Association. He is the author or coauthor of The Supreme Court and the Attitudinal Model Revisited (2002), with Jeffrey A. Segal, the original edition of which won the Wadsworth Award; Majority Rule or Minority Will (1999), also with Jeffrey A. Segal, which won the C. Herman Pritchett Award; Stare Indecisis: Alteration of Precedent on the Supreme Court (1995), with Saul Brenner; Supreme Court Policy Making: Explanation and Prediction (1979); and Supreme Court Decision Making (1976), with David Rohde. He is also the creator and compiler of a series of National Science Foundation–supported U.S. Supreme Court databases. Thomas G. Walker (PhD, University of Kentucky) is the Goodrich C. White Professor Emeritus at Emory University, where he won several teaching awards for his courses on constitutional law and the judicial process. His book A Court Divided, written with Deborah J. Barrow, won the prestigious V. O. Key Award for the best book on Southern politics. He is the author of Eligible for Execution and coauthor of The Supreme Court Compendium: Data, Decisions, and Developments, 7th Edition, with Lee Epstein, Jeffrey A. Segal, and Harold J. Spaeth.