A scene to begin with

A person sincerely supports daily exercise, downloads a plan and sets an alarm—then skips the walk. Nothing about that sequence proves the attitude was false. It shows the distance between approving an action, intending it and actually doing it.

The question underneath

The gap between a sincere intention and a repeated action is where behavior-change research becomes most useful.

In the article

What changes when we look closer

It helps distinguish a persuasive message from an intervention that produces observable action.

01

Prediction is not intervention

Attitudes and intentions can predict behavior while still being poor levers for changing it. The review separates these questions through four stages borrowed from experimental medicine: identify a determinant, validate its relationship with change, demonstrate that an intervention can alter it and test whether altering it changes behavior. Evidence weakens as the claim becomes more causal: changing intentions often produces only small behavioral change.

02

The intention-behavior gap has structure

An intention must survive opportunity, habit, competing goals, social conditions and the moment of action. Interventions may work better when they combine motivation with planning and environmental support. The important lesson is not that attitudes are irrelevant, but that a favorable belief is one link in a longer causal chain. Researchers must show which link changed and whether that change actually reached behavior.

03

The concepts that make the explanation work

Intention–behavior gap. The distance between planning an action and actually doing it. Wanting to recycle but not sorting waste at home. It prevents intentions from being mistaken for outcomes.

04

How the conclusions fit together

The review does not offer three independent facts. Its conclusions form a sequence: the first reframes the phenomenon, the second identifies an important condition or process, and the third shows what changes when that explanation is used.

  1. 01

    Intentions matter, but gaps remain.

  2. 02

    Experiments test causal change.

  3. 03

    Mechanisms should be measured, not assumed.

These ideas must retain this limit: Effects differ by person, context, behavior and how each construct is measured.

What to keep

  1. Intentions matter, but gaps remain.
  2. Experiments test causal change.
  3. Mechanisms should be measured, not assumed.
  4. Intention–behavior gap: The distance between planning an action and actually doing it.
  5. Effects differ by person, context, behavior and how each construct is measured.
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The nuance

What this story does not let us claim

Effects differ by person, context, behavior and how each construct is measured.

Go deeper: concepts and optional reading practice

Reversible cards

Test the concept

1 / 1

Topic assessment

Check whether you can explain the idea, not merely recognize it.

Every answer is grounded in the explanation above. Some questions introduce new cases to test whether you can apply and analyze the ideas, not merely recall them.

7 questions4 options per questionOne correct answer
01Which statement best captures the review’s central thesis?
02Which is the most appropriate operational definition of “Intention–behavior gap”?
03Which case correctly applies the central concept?
04If two studies obtain different results, which interpretation best preserves the logic of this guide?
05Which complementary conclusion belongs to the paper’s core argument?
06Which formulation best distinguishes “Intention–behavior gap” from a superficial label?
07Which limit should accompany any application of the paper to a new case?
Answer all seven questions.

Source & scope

This is an independent editorial guide, not a reproduction of the paper. Consult the original publication for methods, references and full context. The source article states a Creative Commons Attribution 4.0 license.

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