The Cost of Conviction: How Our Deepest Values Lead Us Astray

A timely and important perspective on how people frame decisions and how relying on sacred values unwittingly leads to social polarization.

When you are faced with a decision, do you consider the best outcome, or do you consider your deepest values about which actions are appropriate? The Cost of Conviction contrasts these two primary strategies for making decisions: consequentialism or prioritizing one's sacred values. Steven Sloman argues that, while both modes of decision making are necessary tools for a good decision maker, people err by deploying sacred values more often than they should, especially when it comes to sociopolitical issues. As a result, we oversimplify, grow disgusted and angry, and act in ways that contribute to social polarization. In this book, Sloman provides a new understanding of today's societal ills and grounds that understanding in science.

Drawing on historical and current examples of the two decision-making strategies in action, the author provides a thorough overview of the psychology of decision making, including work on judgment, conscious and unconscious decision-making processes, the roles of emotion, and even an analysis of habit and addiction. With its unique emphasis on sacred values, The Cost of Conviction is an eye-opening must-read for all decision makers, especially those who wish to understand judgment, social decision making, and leadership.

Author: Steven Sloman
Publisher: MIT Press
Published: 05/20/2025
Pages: 256
Binding Type: Hardcover
Weight: 1.10lbs
Size: 9.10h x 6.10w x 1.10d
ISBN: 9780262049825


Review Citation(s):
Publishers Weekly 04/21/2025

About the Author
Steven Sloman has taught at Brown University since 1992. He is a Fellow of the Cognitive Science Society, the Society of Experimental Psychologists, the American Psychological Society, the Eastern Psychological Association, and the Psychonomic Society. He is the author of Causal Models and a coauthor of The Knowledge Illusion (with Phil Fernbach). He has been Editor-in-Chief of the journal Cognition, Chair of the Brown University faculty, and the creator of Brown University's concentration in Behavioral Decision Sciences.