JC Beall is Professor of Philosophy at the University of Connecticut, and Arché Associate Fellow at the University of St Andrews.
Johan van Benthem is University Professor of Logic at the University of Amsterdam and Professor of Philosophy at Stanford University.
José Luis Bermúdez is Professor and Director of Philosophy, Neuroscience and Psychology at Washington University in Saint Louis.
Berit Brogaard is a Level B Research Fellow at the RSSS Philosophy Program and Centre for Consciousness at the Australian National University, and Associate Professor of Philosophy at the University of Missouri-Saint Louis.
Otávio Bueno is Professor of Philosophy at the University of Miami.
John Burgess is Professor of Philosophy at Princeton University.
Alonzo Church was Associate Professor of mathematics (without tenure) at Princeton University when his contribution to this volume was written in 1945. He was Professor of Mathematics and Philosophy at Princeton, 1961-1967, and then Professor of Philosophy and Mathematics at UCLA until he retired in 1990. Church died in 1995.
Sir Michael Dummett is former Wykeham Professor of Logic and is currently Emeritus Professor at University of Oxford. He was knighted for service to philosophy and racial justice.
Frederic Fitch was Sterling Professor Emeritus of Philosophy at Yale University when he died in 1987.
Michael Hand is Professor of Philosophy at Texas A&M University.
W. D. Hart is Professor of Philosophy at University of Illinois at Chicago.
Carrie Jenkins is Postdoctoral Research Fellow at Australian National University, Arché Associate Fellow at the University of St Andrews, Associate Fellow of the Centre for
Metaphysics and Mind at the University of Leeds, and Lecturer at the University of Nottingham.
Christoph Kelp has recently completed his doctoral dissertation at the University of Stirling.
Jonathan L Kvanvig is Distinguished Professor of Philosophy at Baylor University.
Bernard Linsky is Professor of Philosophy at the University of Alberta.
Graham Priest is the Boyce Gibson Professor of Philosophy at the University of Melbourne, and Arché Professorial Fellow at the University of St Andrews.
Duncan Pritchard is Professor of Philosophy at the University of Edinburgh.
Stig Alstrup Rasmussen has formerly held positions at the Universities of Edinburgh and Copenhagen. He obtained his habilitation at the University of Copenhagen in 2004.
Greg Restall is Associate Professor of Philosophy at the University of Melbourne.
Joe Salerno is Visiting Research Fellow at the Australian National University and Assistant Professor of Philosophy at Saint Louis University.
Neil Tennant is Humanities Distinguished Professor of Philosophy at the Ohio State University.
Timothy Williamson is the Wykeham Professor of Logic at the University of Oxford.