Diagnose which element — motivation, ability, or prompt — is the bottleneck

When a behavior isn’t happening, ask: Is the person motivated enough? Can they do it? Are they being prompted?

Why it works

The model represents behavior as B = MAP: Behavior occurs when Motivation, Ability, and Prompt are all above threshold at the same moment. If any single element is missing, the behavior doesn’t fire, no matter how strong the other two are. This diagnostic logic prevents the most common failure in behavior change: treating low motivation as the problem when the real issue is excessive difficulty or a missing prompt.

How to do it

1. Ask: "Did I have a prompt at the right moment?" If not, install a reliable trigger before changing anything else.
2. Ask: "Was the behavior too hard given how I felt in that moment?" If yes, reduce the behavior before addressing motivation.
3. Ask: "Did I want to do this enough?" Only if both prompt and ability are confirmed, work on motivation.
4. Fix the lowest-cost bottleneck first — a missing prompt is almost always cheaper to fix than low motivation.

Evidence

The Fogg Behavior Model is a practitioner framework grounded in behavioral psychology (operant conditioning, motivation theory, and cue-routine literature). Its diagnostic logic aligns with well-established findings that behavior requires both situational cuing and sufficient task ease. The model has not been tested as a standalone tool in RCTs. (mechanistic)

The framework is theoretically coherent and clinically useful but is practitioner-developed rather than experimentally validated as a complete model. Its components draw on legitimate behavioral research; the specific MAP formulation has not been subjected to comparative trials.

Common mistake

Immediately working on motivation when a behavior fails, which is the hardest and most expensive lever to pull — most behavior failures are prompt or ability problems, not motivation deficits.