Leon Festinger’s 1957 A Theory of Cognitive Dissonance is a key text in the history of psychology – one that made its author one of the most influential social psychologists of his time. It is also a prime example of how creative thinking and problem solving skills can come together to produce work that changes the way people look at questions for good. Strong creative thinkers are able to look at things from a new perspective, often to the point of challenging the very frames in which those around them see things. Festinger was such a creative thinker, leading what came to be known as the “cognitive revolution” in social psychology. When Festinger was carrying out his research, the dominant school of thought – behaviorism – focused on outward behaviors and their effects. Festinger, however, turned his attention elsewhere, looking at “cognition:” the mental processes behind behaviors. In the case of “cognitive dissonance”, for example, he hypothesized that apparently incomprehensible or illogical behaviors might be caused by a cognitive drive away from dissonance, or internal contradiction. This perspective, however, raised a problem: how to examine and test out cognitive processes. Festinger’s book records the results of the psychological experiments he designed to solve that problem. The results helped prove the existence for what is now a fundamental theory in social psychology.

Originally published: Evanston, Ill.: Row, Peterson, c1957.

Leon Festinger’s 1957 A Theory of Cognitive Dissonance is a key text in the history of psychology – one that made its author one of the most influential social psychologists of his time. It is also a prime example of how creative thinking and problem solving skills can come together to produce work that changes the way people look at questions for good. Strong creative thinkers are able to look at things from a new perspective, often to the point of challenging the very frames in which those around them see things. Festinger was such a creative thinker, leading what came to be known as the “cognitive revolution” in social psychology. When Festinger was carrying out his research, the dominant school of thought – behaviorism – focused on outward behaviors and their effects. Festinger, however, turned his attention elsewhere, looking at “cognition:” the mental processes behind behaviors. In the case of “cognitive dissonance”, for example, he hypothesized that apparently incomprehensible or illogical behaviors might be caused by a cognitive drive away from dissonance, or internal contradiction. This perspective, however, raised a problem: how to examine and test out cognitive processes. Festinger’s book records the results of the psychological experiments he designed to solve that problem. The results helped prove the existence for what is now a fundamental theory in social psychology.

′Dr. Joel Cooper has been at the very forefront of research on dissonance theory for decades now. In this book, he provides a brilliant and engagingly-written review of the 50-year history of dissonance research and a masterful account of the ensuing developments in the theory. The book will be an outstanding resource for readers familiar with dissonance research and an enlightening introduction for those who are not′ - Professor Russell H. Fazio, Ohio State University Why is it that people who smoke continue to do so knowing how bad it is for them? What drives people to committing adultery even though they inherently believe this is wrong? What′s the outcome of this contradiction in the mind? Cognitive dissonance has been an important and influential theory since Leon Festinger published his classic work in 1957. It is known by every social psychologist, most psychologists of any stripe, and the lay public, making its way into such mainstream publications as The New York Times with increasing frequency and accuracy. Ultimately, dissonance has become one of the most popularly known expressions of social psychological insights, making its way into the literature in consumer, health and economic behavior, and has become a frequently used explanation of political behavior in the popular press and magazines. In marking the 50th anniversary of the theory′s inception, Joel Cooper - arguably the scholar most associated with dissonance research in the past few decades - has presented a beautiful, modern and comprehensive analysis of the state of dissonance theory. This book charts the progress of dissonance theory, assessing its impact not only within our understanding of psychology but in everyday experiences as well. It should be important reading for students in social psychology, either undergraduate or graduate, but equally relevant to a host of other readers who need to understand or share the same passions for appreciating the significance of cognitive dissonance in the human psyche.

Why do we attempt to justify decisions that are clearly irrational? The answer lies in "cognitive dissonance," the feeling of mental discomfort we experience when we hold two contradictory beliefs at the same time.

The study reported in this volume grew out of some theoretical work, one phase of which bore specifically on the behavior of individuals in social movements that made specific (and unfulfilled) prophecies. We had been forced to depend chiefly on historical records to judge the adequacy of our theoretical ideas until we by chance discovered the social movement that we report in this book. At the time we learned of it, the movement was in mid-career but the prophecy about which it was centered had not yet been disconfirmed. We were understandably eager to undertake a study that could test our theoretical ideas under natural conditions. That we were able to do this study was in great measure due to the support obtained through the Laboratory for Research in Social Relations of the University of Minnesota. This study is a project of the Laboratory and was carried out while we were all members of its staff. We should also like to acknowledge the help we received through a grant-in-aid from the Ford Foundation to one of the authors, a grant that made preliminary exploration of the field situation possible.

This volume describes advances in the theory of cognitive dissonance, from its origination in 1954 to the present day.