It is with great pleasure that I introduce Tonja Jacobi as this week's guest blogger. Tonja joined the Northwestern Law faculty in 2004, and earned her PhD in political science from Stanford University, where she wrote her dissertation on separation of powers constraints on the judiciary. She also holds a Masters from the University of California, Berkeley and a law degree from the Australian National University. Her areas of interest include judicial politics, game theory, American governmental institutions and constitutional law. Her current projects include a positive political theory of doctrine, an empirical study of the causes of litigiousness, a model of judicial signaling behavior, and a critical analysis of the use of state legislation as evidence of a national consensus in death penalty cases.