MENTAL MODEL · M6621

Fogg Behavior Model

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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

A behavior design model developed by Dr. BJ Fogg of Stanford University: Core formula: B = MAT (Behavior = Motivation × Ability × Trigger) Three elements: - M (Motivation): Motivation - the degree to which one wants to do the thing - A (Ability): Ability - the ease of doing the thing - T (Trigger/Prompt): Trigger/Prompt - the signal or reminder that prompts the behavior Condition for behavior to occur: Behavior occurs only when motivation, ability, and trigger are simultaneously present and strong enough.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Simplify behavior, design habits. The FBM model helps understand why certain behaviors are difficult to cultivate—usually

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Anchor fast decisions

A behavior design model developed by BJ Fogg, with the formula B = MAT. Core insight: **Behavior occurs = Motivation × Ability × Trigger are all present and strong enough**. The three are in an "and" relationship—if any one approaches zero, the behavior does not occur. Therefore, to change behavior, you don't have to drastically increase motivation; improving ability (simplifying) or adding triggers is often a more effortless lever.

MINIMUM ACTION

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Practice this model in one real situation:

Clarify the target behavior
Assess M (whether motivation is sufficient), A (whether it is easy to do), and T (whether there is a prompt)
Find the weakest link: if ability is weak, simplify the steps
if trigger is weak, add a prompt
only if motivation is weak, work on motivation
Design tiny behaviors (Tiny Habits) to make A extremely high.

Check to track your progress (stored locally)

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Source support: Explicit

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en.wikipedia.orghttps://en.wikipedia.org/wiki/Behavioural_change_theoriesZH · Explicit
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