All academic disciplines periodically appraise their effectiveness, evaluating the progress of previous scholarship and judging which approaches are useful and which are not. Although no field could survive if it did nothing but appraise its progress, occasional appraisals are important and if done well can help advance the field.This book investigates how international relations theorists can better equip themselves to determine the state of scholarly work in their field. It takes as its starting point Imre Lakatos's influential theory of scientific change, and in particular his methodology of scientific research programs (MSRP). It uses MSRP to organize its analysis of major research programs over the last several decades and uses MSRP's criteria for theoretical progress to evaluate these programs. The contributors appraise the progress of institutional theory, varieties of realist and liberal theory, operational code analysis, and other research programs in international relations. Their analyses reveal the strengths and limits of Lakatosian criteria and the need for metatheoretical metrics for evaluating scientific progress.

Bridges and Boundaries offers a conversation between what might loosely be described as traditionalist diplomatic and military historians, and political scientists who employ qualitative case study methods to examine international relations. The book opens with a series of chapters discussing differences, commonalities, and opportunities for cross-fertilization between the two disciplines.To help focus the dialogue on real events and research, the volume then revisits three empirical topics that have been studied at length by members of both disciplines: British hegemony in the nineteenth century; diplomacy in the interwar period and the causes of World War II; and the origins and course of the Cold War. For each of these subjects, a political scientist, a historian, and a commentator reflect on how disciplinary "guild rules" have shaped the study of international events. The book closes with incisive overviews by Robert Jervis and Paul W. Schroeder.Bridges and Boundaries explores how historians and political scientists can learn from one another and illustrates the possibilities that arise when open-minded scholars from different disciplines sit down to talk.