Build a useful investigation brief
Audit the wording
Underline interface labels, step order, success hints, and assumptions about prior knowledge. Replace them with the participant goal and context. Record what information the facilitator would still need to provide for consent or safety.
Observe an independent attempt
Run the task with the facilitator silent except for the planned neutral probes. Capture first action, search strategy, hesitation, recovery, and explanation. Compare the participant path with the script without grading the person.
Test alternative prompts
Try a revised scenario or a different starting state and compare behavior. Ask whether prototype fidelity, participant familiarity, or task stakes explain the difference. Preserve the original task and pilot result so the change is auditable.
What to carry forward
The investigation brief should link task wording, prototype state, independent behavior, revised prompt, and competing explanations. End with a neutral task or a specific pilot question. Do not attribute a smooth path to the design when the instructions supplied the route.
Technical background: Nielsen Norman Group research guidance.
Keep the decision with the work.
Use a Work Item in Aglet to record the problem, the evidence you have, and the next decision. Add an owner and priority, then keep updates in the discussion so the next person can follow the reasoning.
Create an account See the product workflow