Contagious: Why Things Catch On (opens in a new tab)[6]
Berger’s sharing principles describe several mechanisms that can help explain why people talk about and pass along ideas.

Berger applies behavioral science to explain how ideas spread and how change can happen by reducing barriers rather than pushing harder.
Wharton identifies influence, word of mouth, and consumer behavior among Berger's research interests.
The STEPPS framework groups several mechanisms that can encourage people to share.
The Catalyst and its REDUCE guide focus on barriers that make change difficult.
Berger’s Wharton course descriptions examine why products, services, and ideas become popular and how social dynamics shape success.
The official book description presents social influence as a force shaping choices and behavior.
The official description of The Catalyst frames successful change as removing barriers and reducing friction rather than pushing harder.
The official book listing describes words as tools for persuasion, communication, connection, and action.
Six drivers of sharing: social currency, triggers, emotion, public visibility, practical value, and stories.
A change framework that examines reactance, endowment, distance, uncertainty, and corroborating evidence as barriers to change.
A change approach that identifies and removes barriers, reduces friction, and lowers hurdles to action.
The official description of Contagious says six basic principles help explain how products, initiatives, services, and ideas become popular; the supplied text does not enumerate those principles.
The official description of Invisible Influence challenges the idea that choices and behaviors are driven only by personal tastes and opinions, stating that this view is wrong.
The official description of The Catalyst explicitly contrasts applying more force with removing barriers as a way to enable change.
Berger describes STEPPS as six distinct principles that can help explain why people talk about and share ideas or products.
Berger's official description of The Catalyst centers on identifying and removing barriers rather than simply applying more force.
Berger’s sharing principles describe several mechanisms that can help explain why people talk about and pass along ideas.

A guide to enabling change by identifying and reducing barriers.
The official listing presents the book as concerning how words can persuade, communicate, connect, and drive action.
The official description presents an approach to change based on identifying and removing barriers rather than pushing harder.
The official listing describes the book as addressing how influences beyond personal thoughts and opinions shape choices and behavior.
When a change is not happening, the instinct is often to turn up the pressure: make the case more forcefully, repeat the message, or push for a decision. But resistance does not always mean people have failed to understand the proposal. Sometimes the way we…
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Once you have identified that pressure itself may be getting in the way, the next question is more specific: does the proposed change feel close enough, and clear enough, for someone to consider? Jonah Berger’s REDUCE framework calls these two barriers…
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Original source: The Catalyst: A Three-Part Executive Brief (opens in a new tab)
A Wharton Magazine profile reported that Berger was finishing his tenth year as a marketing professor at the Wharton School.
Wife
The 2017 Wharton Magazine profile identifies Jordan Etkin as Berger’s wife and an associate marketing professor at Duke University.

The Meet the Authors series host Peter Fader talks with Berger about The Catalyst: How to Change Anyone’s Mind.
“When we care, we share.”