Who Is Rational?

"Stanovich and his colleagues have done an absolutely remarkable job in exploring individual differences. I think this will be the definitive work on this topic for decades. The book...is necessary reading for anyone who plans to work on this topic, whether as a philosopher or a psychological researcher."
—Contemporary Psychology

"This is an important book."
—Informal Logic

"This is an ambitious book. Any book that sets out with the goal of addressing fundamental issues of human rationality has its work cut out for it. What is impressive about this book is the extent to which it succeeds: Stanovich poses an interesting question and examines the issue from a novel prespective. The scholarship of the book is impressive, and his command of the literature and analysis of the issues produce a thoughtful and thoroughly articulated viewpoint. His arguments are carefully reasoned, and are supported by meticulous and rigorous experimental evidence.
"...it is an excellent summary of the important issues and current perspectives in the rationality debate, readers interested in knowing more about the broader issues are also likely to find this book to be a useful source."
—Canadian Journal of Experimental Psychology

"The results of this project contribute to resolving the on-going debate over whether humans are fundamentally rational or irrational creatures. No one with a strong interest in judgment, decision-making, reasoning, rationality, or thinking styles should overlook this interesting, readable, and well-organized book....This book says something new and important about human rationality and is a great contribution to the field."
—Cognitive Science Society Newsletter

"The book is clearly structured and easy and interesting to read. All major arguments, positions and empirical studies relevant to the topic are discussed..."
—Theory & Psychology

"This book gives the definitive account of the relation between reasoning ability and intelligence."
—Philip Johnson-Laird
Princeton University

"This book describes an important project which shows consistent individual differences across a variety of reasoning problems. The consistencies involve a much wider range of tasks than those that have been studied before in this way. The tasks include many of those used to study fallacies and biases in judgments, decisions, and reasoning. The findings constrain what can be said about the relevance of normative models to prescriptive and descriptive models of judgment and reasoning. For example, they raise a problem for the view that prescriptive models designed to improve reasoning (according to the usual normative standards) are self-defeating. This book will be of interest to scholars at all levels with interests in reasoning, judgment, decision making, and individual differences in mental abilities, as well as to those in social and developmental psychology who have explored related issues."
—Jonathan Baron
University of Pennsylvania

"This remarkable book has emerged from an exciting research programme which provides some of the clearest evidence to date that the study of individual differences in task performance can lead to theoretical advances in our understanding of mental processes. Professor Stanovich provides a discussion of rationality and thought processes which is equally impressive for its breadth of scholarship as for its depth of intellectual argument. The issues he discusses are of central importance for cognitive scientists and deserve attention from all serious students of this fascinating topic."
—Jonathan Evans
University of Plymouth