In recent years the psychology of reasoning has undergone radical change, which can only be seen as a Kuhn-style scientific revolution. This shift has been dubbed 'New Paradigm'. For years, psychologists of reasoning focused on binary truth values and regarded the influence of belief as a bias. In contrast to this, the new paradigm puts probabilities, and subjective degrees of belief, centre stage. It also emphasises subjective psychological value, or utility; the way we reason within our own social environment ('social pragmatics'); and the crucial role of dual process theories. Such theories distinguish between fast, intuitive processes, and effortful processes which enable hypothetical thinking.
The new paradigm aims to integrate the psychology of reasoning with the study of judgement and decision making, leading to a much more unified field of higher mental processing. This collection showcases these recent developments, with chapters on topics such as the difference between deduction and induction, a Bayesian formulation of faint praise, the role of emotion in reasoning, and the relevance of psychology of reasoning to moral judgement. This book was originally published as a special issue of Thinking & Reasoning.
Shira Elqayam is a Reader in Cognitive Science at De Montfort University, Leicester, UK. Her work focuses on reasoning, normative thinking, and rationality.
Jean-François Bonnefon is a Senior Research Scientist at the Toulouse School of Economics, France, where he studies the psychology of rational thinking and behavior.
David Over is an Emeritus Professor in the Psychology Department at Durham University, UK. His main focus is on the psychology of reasoning.
Introduction: New paradigm psychology of reasoning Shira Elqayam and David E. Over
Part I: Probability and degrees of belief
1. Reasoning to and from belief: Deduction and induction are still distinct Jonathan St. B T. Evans and David E. Over
2. Scope ambiguities and conditionals David Over, Igor Douven and Sara Verbrugge
3. Uncertainty and the de Finetti tables Jean Baratgin, David E. Over and Guy Politzer
4. The new psychology of reasoning: A mental probability logical perspective Niki Pfeifer
5. Dynamic inference and everyday conditional reasoning in the new paradigm Mike Oaksford and Nick Chater
Part II: Utility and social pragmatics
6. New ambitions for a new paradigm: Putting the psychology of reasoning at the service of humanity Jean-François Bonnefon
7. When emotions improve reasoning: The possible roles of relevance and utility Isabelle Blanchette and Serge Caparos
8. James is polite and punctual (and useless): A Bayesian formalisation of faint praise Adam J. L. Harris, Adam Corner and Ulrike Hahn
Part III: Rationality and dual processing
9. Matching bias on the selection task: It's fast and feels good Valerie A. Thompson, Jonathan St. B. T. Evans, Jamie I. D. Campbell
10. Rationality in the new paradigm: Strict versus soft Bayesian approaches Shira Elqayam and Jonathan St. B. T. Evans