Designing and Evaluating Behaviour Change Interventions

Easy-to-use guidance on designing and evaluating any behaviour change intervention using the 5-step approach


Guidance for service providers, funders and commissioners (Summary version)

Step 3: Draw a logic model

Show how the project should work: Clear links between resources, activities and outcomes.

What are logic models/who can use them?

What are logic models?

Logic models are step-by-step diagrams which simply show:

  • What you’re hoping to achieve in the long run (long-term outcomes).
  • The process (short and medium term outcomes) through which your planned activities can be expected to lead to long-term aims.
  • What resources will you need to do this (inputs).

Who can use them?

Anyone who is planning activities with particular aims in mind can benefit from using a logic model. This includes funders and commissioners, who might use them to plan how to assess applications and allocate funds in pursuit of their overall aims, as well as organisations and individuals planning behaviour change projects or services.

A logic model template

A Logic Model Template to use

This blank template can be found here:

A project-level logic model

The following logic model shows how a fictitious project, aimed to increase young women’s physical activity levels, is expected to work. It is based on international evidence about ‘what works’ to promote active lifestyles, particularly for young women (see page 12). It shows clear links between activities and the expected outcomes, based on what research studies tells us.

This model is quite general, 'real life' service providers should be a bit more detailed about the evidence they have used to design and deliver the intervention and also describe the content of activities in more detail.

A project level logic model


Email: Catherine Bisset

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