Usability Benchmarking Plan With SUS and Task Metrics
Design a repeatable usability measurement program.
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Design a repeatable usability benchmark for [PRODUCT_OR_SITE]. Users: [USER_GROUPS]. Critical tasks: [CRITICAL_TASKS]. Resources: [RESOURCES]. Release cycle: [RELEASE_CYCLE]. Return as tables: 1. Study design: Element | Decision (participants per round and why, moderated or unmoderated, device mix, environment, recruitment criteria, incentive). 2. Task table: Task | Starting point | Success criteria | Time limit | Metrics (success rate, time on task, errors, clicks, confidence rating) | Observer notes. 3. Questionnaires: the ten System Usability Scale statements written out, scored 1 to 5, with scoring steps (subtract 1 from odd items, subtract from 5 for even items, sum, multiply by 2.5). Add one single-ease question after each task. 4. Interpretation guide: how to describe SUS results carefully, with sample size caveats and no false precision. Mention that benchmark averages are general reference points only. 5. Reporting template: baseline, current round, change, confidence, and top issues. 6. Schedule: when to rerun and how to keep method constant. Add a script for the moderator in plain words, including consent and the reminder that we test the product and not the participant. Avoid leading prompts.
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