How Change Happens by Cass R. Sunstein

How Change Happens delves into the various mechanisms through which social change occurs, ranging from sudden upheavals to gradual shifts. Sunstein examines the pivotal role of social norms and their frequent collapse, illustrating how moments of challenge can lead to significant transformations. The book also explores the effectiveness of nudges—subtle interventions that guide behavior—such as apps that count calories or texted reminders. Sunstein discusses when these nudges are successful and when they might give way to more stringent measures like bans and mandates. Additionally, the book addresses social divisions and the phenomenon of 'partyism,' where political party identification can both fuel and obstruct social change. Through a blend of behavioral economics, psychology, and other fields, Sunstein provides a comprehensive understanding of how and why societies evolve.

Reviews

ResearchGate · 2025-08-06

important 4.00

The book is considered important and well worth reading, especially for its insights into the nudging agenda. It is seen as a valuable contribution to understanding social change.

The reviewer finds this book to be an important read, particularly for its exploration of the nudging agenda. They believe it offers valuable insights into how social change can be understood and influenced. The book is praised for its depth and the way it tackles complex issues related to social dynamics. The reviewer suggests that it is a must-read for anyone interested in the mechanisms behind social change and how to effectively implement it.

Quick quotes

But I feel it is an important book and well worth reading.

Partly because of what it tells us about the 'Nudging' agenda when some will have ...

How Change Happens is a must-read for those who want to understand, and help to instigate, social change.

Goodreads · 2019-04-09

insightful 3.50

The book explores various mechanisms of social change, highlighting the importance of norms and social cascades. It is praised for its illuminating insights into how change occurs.

This book delves into the different ways social change can happen, from unleashing suppressed preferences to nudging and social cascades. The reviewer highlights how Sunstein puts norms at the center of how we think about change, making the book particularly insightful. They appreciate the practical examples and theoretical frameworks provided, which help readers understand the complexities of social change. The book is seen as a must-read for anyone interested in social dynamics and how to instigate change.

Quick quotes

Sunstein's book is illuminating because it puts norms at the center of how we think about change.

The different ways that social change happens, from unleashing to nudging to social cascades.

An illuminating study that reveals the different ways social change occurs.

Journal of Law, Economics, and Policy (JLEPP) · RH Brescia · 2001-03-01

comprehensive 4.50

The book explores the mechanisms of social change and the triggers that cause it. It is praised for its comprehensive analysis and practical insights.

RH Brescia provides a detailed review of how Sunstein explores the mechanisms through which social change can occur. They highlight the book's comprehensive analysis of the triggers that cause social change and appreciate the practical insights offered. The reviewer finds the book to be a valuable resource for understanding the complexities of social change. They particularly like the way Sunstein breaks down the different factors that contribute to social change, making it easier to grasp the overall picture.

Quick quotes

In How Change Happens, Cass Sunstein explores the mechanisms through which social change can occur, the triggers that can cause it, and.

Sunstein's book is illuminating because it puts norms at the center of how we think about change.

The different ways that social change happens, from unleashing to nudging to social cascades.

Appears in Lists

The 34 Best Books to Learn Behavioral Economics