Scenarios are short narrative descriptions of a specific user, in a specific context, trying to accomplish a specific goal. They ground design decisions in realistic situations rather than abstract requirements, giving teams a concrete human story to design against. A well-written scenario is specific enough to inform design choices but brief enough to hold in mind during a design session. It is one of the simplest and most effective tools for keeping design thinking anchored to real human situations.
What It Is
A scenario typically describes who is trying to do something, why they need to do it, what context they are in, and what they are trying to achieve — without prescribing how the interface should respond. It is deliberately solution-agnostic: the scenario describes the problem situation, not the answer. Design scenarios are derived from user research and personas, and they serve as the primary input for usability test task design, prototype scoping, and feature prioritisation conversations.
How to Run It
- Base each scenario on a specific persona and a specific goal identified in your user research.
- Write the scenario in narrative form: 'Mia is a freelance graphic designer preparing an invoice for a new client. She's never used this tool before and needs to...'
- Keep scenarios to three to five sentences — long enough to establish context, short enough to memorise.
- Write three to five core scenarios for each primary persona.
- Review scenarios with the team to check that they reflect real user goals, not designer assumptions.
- Use scenarios to scope prototypes, write usability test tasks, and anchor design critique sessions.
When to Use It
Scenarios are most useful during early design when the team needs to agree on what problems to solve before generating solutions. They serve as anchors throughout the entire design process — in ideation to focus idea generation, in prototyping to decide what to build, and in testing to write realistic tasks. Their value is proportional to how grounded they are in actual research: scenarios built on assumptions drift toward wishful thinking.
Tips for Success
- Write in the third person and use present tense to make scenarios feel immediate and real.
- Include environmental and emotional context, not just the task: where is the person? How are they feeling? What else is competing for their attention?
- Avoid mentioning specific interface elements — scenarios describe needs, not solutions.
- Update scenarios when new research reveals that the original framing was inaccurate or incomplete.
