Influence Review Special Issue 2013

Jonah Berger

Conta
gious

Social currency Triggers Emotion Public Practical value Stories

The Big Idea

People share what makes them look good, feel something, and carry useful proof.

Contagious is a field guide for making ideas travel through people instead of through paid media. The book's core move is practical: do not ask, "How do we get attention?" Ask, "What gives someone a reason to pass this along?"

The six STEPPS are not a checklist for gimmicks. They are lenses for diagnosing why one restaurant, product, rumor, campaign, or public-health message becomes talkable while another disappears. Spread begins when the audience gets a reward for carrying the message.

STEPPS Framework

Six editorial hooks for word-of-mouth.

Each hook gives the sharer a job: signal taste, remember at the right moment, transmit feeling, make behavior visible, help a friend, or smuggle the idea inside a story.

S STEPPS

Social Currency

Make the sharer look informed, tasteful, insider, clever, or ahead of the crowd.

T STEPPS

Triggers

Attach the idea to cues that appear naturally in everyday life.

E STEPPS

Emotion

High-arousal feelings move people from noticing to forwarding.

P STEPPS

Public

Make the behavior observable so imitation has something to copy.

P STEPPS

Practical Value

Package usefulness so people can help others with low effort.

S STEPPS

Stories

Wrap the lesson in a narrative people can retell without losing the point.

Interactive Desk

Edit an idea until it wants to travel.

Pick an ordinary seed, then toggle the STEPPS you can honestly build into it. The front page rewrites itself as your word-of-mouth architecture improves.

Current assignment

Field Notes

Make the sharer the hero, not the campaign.

Package status

Give people a way to signal taste, expertise, generosity, or insider access when they talk about the idea.

Borrow daily cues

Tie the message to a frequent environment, phrase, habit, day, or object so memory gets prompted.

Design for retelling

Reduce the idea to a vivid scene, surprising fact, or useful script that survives being repeated.

Show the behavior

If adoption is invisible, build public artifacts, rituals, badges, or defaults that others can notice.

Reader Marginalia

Core Insights

6 clips

"People do not share randomly. They share because the act gives them social currency."

resonated with this

"Triggers turn memory into distribution."

resonated with this

"High-arousal emotion is the difference between noticing and forwarding."

resonated with this

"If behavior is invisible, imitation has nothing to copy."

resonated with this

"Useful information travels because helping someone else feels good."

resonated with this

"Stories are Trojan horses for ideas."

resonated with this

Practical Application

Engineer the pass-along moment.

Use these actions when an idea is good but too quiet, too private, too generic, or too hard to retell.

01

Name the sharer's reward

Before writing the message, define how repeating it makes someone look: generous, early, tasteful, funny, competent, principled, or connected.

do this
02

Attach the idea to a real-world cue

Pick one recurring trigger already in your audience's life, then rewrite the idea so that cue naturally reminds them to mention or use it.

do this
03

Raise one high-arousal emotion

Replace flat benefits with a moment of awe, urgency, surprise, delight, or righteous frustration that gives people energy to pass it on.

do this
04

Make adoption visible

Create a public artifact, ritual, badge, receipt, phrase, or behavior that lets observers notice the idea without requiring an explanation.

do this
05

Package the useful bit

Turn practical value into a compact pass-along asset: a checklist, rule of thumb, comparison, template, or timely recommendation.

do this
06

Hide the lesson inside a story

Write the anecdote someone would tell at lunch, then make sure the product, behavior, or insight is essential to the punchline.

do this

Closing Quote

"Ideas spread when sharing them makes people feel smart, useful, moved, and part of a story worth retelling."

HourLife distillation

Back to library

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Downloads & Shareables

Print it, pin it, post it. Ways to take Contagious off the screen and into the world.

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Action Checklist

Every action from this page as a printable to-do list with a 7-day tracker.

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Book Summary Card

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