Theory of Change

A theory of change is a specific and measurable description of a social change that forms the basis for planning, ongoing decision-making and evaluation.

It encourages you to reflect on your goals and plans (your strategy), to discuss them with others and to make sure they’re clearly understood.

A theory of change is an interpretation of what we believe – but based on evidence and experience – expressing the likely course of change.

It can be represented in:

• a change map (a visual representation of the journey)
• as a narrative (story)
• or both.

There is no single definition or methodology for theory of change, it is both a thinking process and a product so the process of developing a strategy is as useful as the strategy itself.

A theory of change can be developed at the beginning of a piece of work to help with planning or to describe an existing piece of work. It can be created at organisational level (describing your strategy and plans), programme or project level.

There are a number of ways you can use theory of change:

• A process and tool to build shared understanding: Creating a theory of change together with stakeholders can help to align thoughts and develop agreement on your organisational purpose.
• Tool and output for communications: It allows you to clearly and succinctly let others know what your organisation, project or programme is trying to achieve and how you are going about it.
• A planning tool for new work: Theory of change breaks down broad, long-term changes into a series of smaller changes at different levels to understand how they are linked.
• A tool and process to help you guide existing work: In large organisations, when there may be several projects running simultaneously, theory of change helps to map these different projects first and then consider how they link and relate to each other.
• A tool to help you to evaluate, learn and improve: Theory of change helps you identify what you will measure to understand whether the changes are happening, how and for whom.

Before you start, be clear about:

• how the theory of change will support your work and how you will use it
• the level of detail you require
• how you'll get buy-in.

Your process will depend on:

• how much power you want to distribute
• how transparent and inclusive you can make the process
• how open you are to new potential ideas and solutions to your cause.

If you're using your theory of change to plan new work, you'll need to involve key decision-makers in your organisation.

You may also want to include other groups, such as your wider staff group and the people and communities you work with.

Read more about this in our guidance on involving people in developing your strategy.

Follow these steps to begin building your own theory of change:

1. Agree long term, big change you want to see
2. Map outcomes backwards
3. Identify activities necessary to achieve outcomes
4. Identify assumptions (enablers and risks underlying your theory) to interrogate your theory. At this stage, you identify key assumptions you have made between the work delivered and the difference you want to make and about the overall rationale and context.
5. Establish a timeline and plan resources
6. Produce a diagram and narrative.

If you and your colleagues don’t have expertise in this area, consider accessing training or consultancy support. It can be helpful to involve an external consultant.

Using a consultant also means that all staff can participate in theory of change development workshops, rather than facilitating them.