Gaia Bellone is a graduate student in the PhD program in the Department of Statistics, Carnegie Mellon University. She received her Bachelor's degree in Economics from Luigi Bocconi University, Italy, and her Master's degree in Statistics from Carnegie Mellon University.

Walter Bossert is Professor of Economics and CIREQ Research Fellow at the University of Montreal. He is a member of the editorial boards of Social Choice and Welfare, Mathematical Social Sciences, and Economics and Philosophy. His research interests include decision theory, rationality, social choice and population ethics and, with Charles Blackorby and David Donaldson, he has co-authored Population Issues in Social Choice Theory, Welfare Economics, and Ethics (Cambridge University Press, 2005). He is the recipient of the 2004 John Rae Prize awarded by the Canadian Economics Association.

Luigino Bruni is Associate Professor of Economics at the Milano-Bicocca. His research topics are history of economics, philosophy of social sciences, economic analysis of interpersonal relationships, and happiness. His recent books include Civil Happiness (Routledge, 2006), Civil Economy (with S. Zamagni, Peter Lang, Oxford University Press) and Reciprocity, Altruism and Civil Society (Routledge, 2008).

Benedetto Gui is Professor of Economics at the University of Padova, Italy (Dept. of Economic Sciences, via del Santo 33, I-35123, Padova; email: benedetto.gui@unipd.it). His research activity has spanned from labour economics to the economics of worker-managed and non-profit organizations, and, more recently, to the economics of interpersonal relations. Beside other publications, he is the author of several articles published in international journals (including Economics Letters, Journal of Comparative Economics, and Journal of Labor Economics), and the editor, with Robert Sugden, of Economics and Social Interactions: Accounting for Interpersonal Relations (Cambridge University Press, 2005).

Daniel M. Haybron is Associate Professor of Philosophy at Saint Louis University. Previously he taught at the University of Arizona, and he received his PhD in philosophy at Rutgers University. His research interests centre on moral psychology and the psychology of well-being. He is the author, most recently, of The Pursuit of Unhappiness: The Elusive Psychology of Well-Being (Oxford University Press, 2008).

Frank Hindriks is Assistant Professor at the Ethics Department of the University of Groningen. From 2001 to 2005 he was Assistant Director of the Erasmus Institute for Philosophy and Economics (EIPE). His papers have appeared in journals such as the Journal of Political Philosophy, Philosophical Quarterly, and Philosophical Studies. In addition to collective freedom, rights, and responsibility, his current research concerns the significance of experimental ethics for the philosophy of action.

Kevin D. Hoover is Professor of Economics and Philosophy at Duke University. He is the author of Causality in Macroeconomics and The Methodology of Empirical Macroeconomics (both Cambridge in 2001), and of numerous articles in macroeconomics, monetary economics, history of economics, economic methodology, and the philosophy of science. He is past President of the History of Economics Society, past Chairman of the International Network for Economic Methodology, and previously an Editor of the Journal of Economic Methodology.

Joseph B. Kadane is the Leonard J. Savage University Professor of Statistics and Social Sciences, Emeritus, at Carnegie Mellon University. He is a Fellow of the American Statistical Association, the Institute of Mathematical Statistics and the Royal Statistical Society. His most recent book is Statistics in the Law (Oxford University Press, 2008). He studies the foundation of statistics and their application to many applied fields.

Caterina Marchionni is post-doctoral fellow at the Department of Philosophy and managing director of EIPE (Erasmus Institute for Philosophy and Economics) at the Erasmus University of Rotterdam. Her research has mostly focused on intertheoretic and interdisciplinary relations and on scientific explanation in economics and in the social sciences more generally.

Julie A. Nelson is an Associate Professor of Economics at the University of Massachusetts, Boston. Her recent works include Economics for Humans (University of Chicago Press, 2006) and ‘Economists, value judgments, and climate change: a view from feminist economics’ (Ecological Economics, 2008). Email: julie.nelson@umb.edu.

Pierre Salmon is Professor Emeritus at the Université de Bourgogne, where he taught economics. His main research interests are economic methodology and the economic approach to politics. He has co-authored a book on economic methodology, co-edited several volumes in the second area, and published articles and contributed chapters in both fields. Email: pierre.salmon@u-bourgogne.fr

Julian Reiss is Assistant Professor in the Philosophy Department of Erasmus University Rotterdam, specializing in philosophy of economics and general philosophy of science. His publications include Causality Between Metaphysics and Methodology (forthcoming with Routledge), ‘Causation in the social sciences: evidence, inference, and purpose’ (Philosophy of the Social Sciences, 2009), ‘Counterfactuals, thought experiments and singular causal analysis in history’ (Philosophy of Science, 2008), ‘The philosophy of simulation: hot new topic or same old stew? ‘ (with Roman Frigg; Synthese, 2009).

Aris Spanos is the Wilson Schmidt Professor of Economics in the Department of Economics at Virginia Polytechnic Institute and State University (Virginia Tech), USA. His specializations include econometrics, modelling speculative prices, philosophy, and methodology of empirical modeling. His research interests include misspecification testing and respecification, resampling techniques and statistical adequacy, parametric vs. nonparametric modelling, reliability and precision of statistical inference, and data mining in economics. He is the author of Probability Theory and Statistical Inference (Cambridge University Press, 1999) and Statistical Foundations of Econometric Modeling (Cambridge University Press, 1986).

Katie Steele is a Lecturer in Philosophy at the London School of Economics and Political Science. Her research interests fall within formal epistemology and rational choice theory, including applications of rational choice models to environmental decision-making.

Robert Sugden is Professor of Economics at the University of East Anglia, Norwich. His research uses a combination of theoretical, experimental and philosophical methods to investigate issues in welfare economics, social choice, choice under uncertainty, the foundations of decision and game theory, the methodology of economics, and the evolution of social conventions. His recent books include The Economics of Rights, Cooperation and Welfare (Palgrave Macmillan, second edition 2004) and, with five co-authors, Experimental Economics: Re-thinking the Rules (Princeton University Press, forthcoming).

Kotaro Suzumura is Professor of Economics at Waseda University, Japan. His areas of research include individual and collective choice, industrial organization, welfare economics and political economy. He is the author of Rational Choice, Collective Decisions and Social Welfare (Cambridge University Press, 1983). He is a Fellow of the Econometric Society, a Vice-President of the Science Council of Japan and a Past President of the Society for Social Choice and Welfare and of the Japanese Economic Association. The honours he has received include the Medal with Purple Ribbon and the Japan Academy Prize.

David Teira is a Senior Lecturer in the Logic, History and Philosophy of Science Department at Universidad Nacional de Educacion a Distancia (Madrid) and research associate of the Urrutia Elejalde Foundation. He works on the history and philosophy of statistics and economics. Recent publications include ‘Facts, norms and expected utility functions’ (History of the Human Sciences, 2008), and ‘The politics of positivism: disinterested predictions from interested agents’, in U. Mäki, ed., The Methodology of Positive Economics: Reflections on the Milton Friedman Legacy (Cambridge University Press, 2009).