Fogg Behavior Model
I teach small groups of professionals how to use my methods to change behavior. Now done via Zoom, learn more about training in Behavior Design that goes above and beyond my book. Learn more here.
What Causes Behavior Change
The Fogg Behavior Model shows that three elements must converge at the same moment for a behavior to occur: Motivation, Ability, and a Prompt. When a behavior does not occur, at least one of those three elements is missing.

The Fogg Behavior Model (FBM) makes it easier to understand behavior in general. What was once a fuzzy mass of psychological theories now becomes organized and specific when viewed through the FBM.
The FBM highlights three principal elements, each of which has subcomponents. Specifically, the FBM outlines Core Motivators (Motivation), Simplicity Factors (Ability), and the types of Prompts. The subcomponents define the larger elements. For example, in the FBM the word Ability refers to the how the Simplicity Factors work together in the context of a Prompt.
The video below is about how motivation changes over time.
How Motivation Changes Over Time
The video below is about competing motivations.
Competing Motivations
The video below is about how motivation and ability change when you start tiny.
How Motivation and Ability Change When You Start Tiny
The video below is about how simplicity changes behavior.
How Simplicity Changes Behavior
The video below shows how the Fogg Behavior Model applies to groups.
How the Fogg Behavior Model Applies to Groups
To learn many practical uses of my Behavior Model, you can apply to join my “Boot Camp in Behavior Design.” This hands-on training is for professionals who want to create products that change people’s behavior for the better.
Over 90% of people who join me report (in an anonymous survey) that my Boot Camp was the best training experience of their careers.
If you’d like to stay updated on my work and the Fogg Behavior Model, sign up for my free newsletter. This way you will received new insights about FBM, as well as new ways to use these insights in industry and academic work.
To use the Fogg Behavior Model or any of my copyrighted works, please get started here.
The Fogg Behavior Model is part of a larger system that helps people design for behavior change. To see my related work (and a lot more), go to BJFogg.com
-BJ

Dr. BJ Fogg founded the Behavior Design Lab at Stanford University, where he directs research and innovation. In addition, he teaches industry innovators how to use his models and methods in Behavior Design. The purpose of his research and teaching is to help millions of people improve their lives.
BJ is the New York Times bestselling author of Tiny Habits.
He authored Persuasive Technology: Using Computers to Change What We Think and Do. He is the co-editor of Mobile Persuasion: 20 Perspectives on the Future of Behavior Change.
To see more of BJ’s work, go to BJFogg.com
Contact Me
bjfogg@stanford.edu
Phone: (707) 222-5555
I usually don’t answer calls from unrecognized phone numbers. If you want an appointment, click here
P.O. Box 20456
Stanford, CA 94309