Formal methods in international relations / Michael Nicholson -- Cumulation, synthesis, and research design for the post-fourth wave / Harvey Starr -- Accomplishments and limitations of a game-theoretic approach to international relations / Bruce Bueno de Mesquita -- Game theory in practice: problems and prospects in applying it to international relations / Steven J. Brams -- Reflections on quantitative international politics / Dina A. Zinnes -- Reflections on millennia, old and new: the evolution and role of quantitative approaches to the study of international politics / James Lee Ray -- Quantitative international politics and its critics: then and now / Russell J. Leng -- Qualitative methods in international relations / Jack S. Levy -- Case study methodology in international studies from storytelling to hypothesis testing / Zeev Maoz