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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, or principled.

I'll do this
02

Attach the idea to a real-world cue

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

I'll do this
03

Raise one high-arousal emotion

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

I'll do this
06

Hide the lesson inside a story

Write the anecdote someone would tell at lunch — with the product or insight essential to the punchline.

I'll do this
04

Make adoption visible

Create a public artifact, ritual, badge, receipt, phrase, or behavior observers can notice without an explanation.

I'll do this
05

Package the useful bit

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

I'll do this
07

Rewrite one line for social currency

Edit one message so sharing it makes the sharer look good for a reason you can name.

I'll do this
08

Add one practical pass-along asset

Turn today's insight into a checklist, template, or one-liner someone can forward.

I'll 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

Printable plan

Build your mini action book.

Pick setup actions and daily habits from Contagious, choose a start date, and download a printable checklist with real calendar pages. Nothing is stored.

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Worksheets that pair with this book's ideas — customize online, download a clean PDF, leave nothing behind.

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Questions

Frequently asked

What is Contagious about?

Jonah Berger's six STEPPS framework for why some ideas, products, and stories spread — and how to build that virality on purpose.

What are the key takeaways from Contagious?

Readers on HourLife most often highlight ideas such as: “People do not share randomly. They share because the act gives them social currency.” “Triggers turn memory into distribution.” “High-arousal emotion is the difference between noticing and forwarding.”

Who should read Contagious?

It's a strong pick for readers exploring Marketing & Persuasion. HourLife distills its core idea into community-voted insights and one practical action worth trying.

What's one thing I can do after reading Contagious?

Name the sharer's reward — Before writing the message, define how repeating it makes someone look: generous, early, tasteful, funny, competent, or principled.

How long does it take to read the Contagious summary?

About five minutes. The HourLife summary distills Contagious into its core idea, 6 community insights, and 8 practical actions you can apply right away.

More from the author

Follow the source.

Browse every HourLife page connected to the writer behind Contagious.

Take it with you

Downloads & shareables.

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

From reading to doing

Turn this book into a daily practice.

Save the insights that land, build the habits that stick, and keep what you learn from Contagious working long after you close the page — inside HourLife.