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Writing Use Cases That Reflect Real User Goals

A use case earns its place when it explains why a person seeks an outcome, what changes if they succeed, and which evidence supports that account. A sequence such as “search, compare and submit” describes interface work, but it can hide the decisions, doubts and constraints that shaped the participant’s behaviour.

Goal-focused scenarios connect research, design and testing. In UCDmanager, a use case can sit beside personas, requirements and usability findings, giving teams a shared reference for deciding what a feature should enable and whether the resulting experience works.

Start with purpose and successful outcome

Begin with the actor, trigger, objective and desired result. A scenario stating that “a customer wants to update contact details without losing access to an existing order” reveals a purpose that can guide several possible solutions. The focus remains on the outcome rather than a prescribed screen or control.

Describe success in terms of both user and service value. The customer should reach the correct account, retain access to the order and receive confirmation that the change was saved. The service should record an accurate update without creating duplicate records or unnecessary support requests.

Build roles from research evidence

A user role should capture a recurring relationship with the service, including responsibilities, knowledge and pressures. When research identifies a consistent pattern, teams can use a research-backed persona to connect the scenario with observed behaviour, needs and usability problems. Demographic details are useful only when they affect access, language, context or expectations.

Keep roles flexible enough to accommodate individual differences. A study might recruit participants in Sydney, Melbourne and Brisbane, yet Brisbane can be an hour behind Sydney and Melbourne during daylight saving. Scheduling, support hours and time-sensitive decisions may therefore require separate assumptions rather than one generic Australian participant.

Follow the journey behind the request

Trace the journey from the person’s trigger to the outcome they need. Include preconditions, information requirements, decisions and completion conditions. For example, someone starting a new job may want to compare superannuation options, understand fees and avoid switching without reviewing the consequences. The resulting flow can adapt across devices while preserving that underlying goal.

Document alternatives only where evidence suggests they matter. A participant may check a government website, read a comparison site or contact a provider before making a decision. Before finalising detailed steps, an author can compare user story examples to distinguish essential behaviour from assumptions inherited from a familiar interface.

Describe context and exception paths

Context determines how people pursue a goal. Record device constraints, browser limitations, connection quality, permissions, time pressure and competing responsibilities. Participants may use an NBN plan, mobile hotspot or regional connection, so a scenario should not assume fast, uninterrupted broadband or unrestricted access to every feature.

Strong scenarios also explain recovery and exception paths. What happens when identity verification fails, required information is missing or a participant changes their mind halfway through? Reviewing documented mobile heuristic violations can reveal common problems involving unclear feedback, inconsistent controls and weak error recovery that deserve representation in the scenario.

Define evidence of success

Completion alone provides a limited view of success. Combine behavioural measures with comprehension, confidence, perceived control and the quality of the resulting outcome. Useful measures might include error rate, decision quality, assistance requests and whether participants can explain what happened after completing the task.

Some studies require controlled technology. If a moderated scenario depends on a specific browser state, server response or test data, teams can use remote test hosting when establishing that environment. The use case should identify why the dependency matters so the infrastructure supports the research question rather than dictating the participant’s journey.

Use familiar Australian details where they affect decisions. Australian English, day-first dates and locally appropriate address formats may influence comprehension, while an Australian price can require clear presentation of AUD, GST and delivery conditions. Including these details prevents participants from spending effort translating an unfamiliar context instead of judging the service.

Validate scenarios through usability testing

Treat each scenario as a hypothesis about behaviour and need. During a pilot, observe whether participants recognise the trigger, understand the goal and choose an appropriate path. Questions about missing information, unexpected branches and recovery can expose assumptions that interviews did not reveal.

Longitudinal evidence can show whether a solution remains useful as participants gain experience. Teams that track results over time can compare repeated tasks, changes in confidence and the effect of later releases. Version the scenario alongside its evidence so that updates remain traceable to actual findings.

Recommendations for durable use cases

A practical use case should remain understandable to research, design, development and testing teams:

These elements create a compact decision record rather than a static task description. They allow teams to see why a user goal matters, which constraints shaped the design and whether observed behaviour supports the intended outcome.