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Influence Gap Analysis
Freequiz · about 15 min
See the move you lead with.
$49full report · once
Your whole report, a 30-day plan and a month of AI Cialdini.
Registration openCialdini's Influence Workshop: Two Days in Atlanta · March 11 and March 12, 2027 · Early bird $2,997Cialdini Institute · Persuasion training
Learn how to get people to say yes
Influence is getting people to agree with you, willingly. Learn it from 40+ years of research, starting free.
Find Out How You PersuadeFree quiz · about 15 minutes · 52 everyday situations
40+ years
Of research on why people say yes
7M+ books sold
In 44 languages, including Influence
7 principles
Each one tested in published studies
1,500+ certified
Practitioners on six continents
These companies have boosted their results with our programs
Free live webinar
Nov 3
Tuesday · 12:30pm ET · 90 minutes
Samir Patel
Chairman, Cialdini Institute
Recognize Manipulation
Online, live
Learn how to spot manipulative sales tactics, avoid being pressured into bad decisions, and build the trust that turns hesitant prospects into confident buyers.
Save My Free Seat
Workshop · In person
Cialdini's Influence Workshop: Two Days in Atlanta
March 11 and March 12, 2027
Buckhead, Atlanta, walkable from Buckhead MARTA station
Early bird $2,997 through December 11, 2026
Reserve a Seat
What you'll learn
Why people say yes
People agree for seven reasons. Here they are in plain words.
Swipe to see all seven →
Where it comes from
The research behind it
Psychologist Dr. Robert Cialdini spent his career asking what makes people say yes. His books, including Influence, have sold more than 7 million copies in 44 languages.
He founded the Cialdini Institute, now led by Samir Patel.
Dr. Robert Cialdini · Tempe, Arizona
1984
Influence is published
2008
Yes! becomes a bestseller
2016
Pre-Suasion is published
2018
Elected to the American Academy of Arts & Sciences
2019
Elected to the National Academy of Sciences
2021
Unity, the seventh principle
Today
1,500+ certified practitioners on six continents
What readers say
4.6 / 5★★★★★24,000+ Amazon ratings of his books →What Warren Buffett and others say about the book
Some of its best-known readers, in their own words.
Photo: Mark Hirschey · CC BY-SA 2.0Warren Buffett
CEO Berkshire Hathaway
“'Influence' is one of the best business books of all time.”
Photo: Dinoch1 · CC BY-SA 4.0Charlie Munger
Vice Chairman, Berkshire Hathaway
“Robert Cialdini has had a greater impact on my thinking than any other scientist.”
Photo: Chatham House · CC BY 2.0Richard Thaler
Nobel Laureate, Behavioral Economics
“If the President had to have one advisor with him at all times, my nomination would be Bob Cialdini, the world's most practical social psychologist, and the master of 'Influence'.”
Photo: Union Eleven · CC BY-SA 3.0Tobias Lütke
Founder Shopify
“'Influence' is a book that made me a billionaire.”
Chris Voss
Wall Street Journal Best-Selling Author
“Anyone who wants their abilities in communication or negotiation to be at their highest level has to read Robert Cialdini's book. Your knowledge base is simply incomplete without it.”
Alex Hormozi
Entrepreneur, Investor
“'Influence' is a must-read for entrepreneurship, sales, and marketing.”
Photo: VGrigas (WMF) · CC BY-SA 3.0Guy Kawasaki
Silicon Valley Venture Capitalist
“Cialdini is the 'Godfather of Influence.' His book is the guiding light for how I conduct business — and in many ways how I live my life.”
Photo: kris krüg · CC BY-SA 2.0Naval Ravikant
Entrepreneur & Angel Investor
“'Influence': classic, classic book. Everybody should read it, memorize it, and understand that the way that people influence other people is consistency, liking, authority, social proof, scarcity, and reciprocity.”
Swipe for more
Where to start
Four ways to start, from free to $2,997
Pick by how much time you have.
Take the Free Quiz
Ask Anytime
AI Cialdini
$29per month · 7 days free on signup
Your best friend for everyday influence challenges.
What you get
- Talk or type, any time
- Advice on your real situation
Most Popular
Cialdini Certified Practitioner Program
$1,497once · self-paced · 7-day refund
Master influence at your own pace, in about 21 hours.
What you get
- 100+ short video lessons
- Your own Action Plan
- A certificate and digital badge
In Person
Two-Day Workshop
$2,997early bird · per seat
Cialdini's Influence Workshop: Two Days in Atlanta.
What you get
- March 11 and March 12, 2027
- Buckhead, Atlanta
- Practice with other leaders
For Organizations
Request a Proposal→Bring this training to your company
Workshops and courses for your whole team.
Questions
Frequently asked questions.
Questions?
Not sure where to start? Ask us.
Tell us what you want to get better at, and we'll point you to the right place. Or email team@cialdini.com.
Participants working a case together