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Direct Observation
Cognitive Task Analysis
Analysts observe and analyze the cognitive processes of external users as they perform tasks, focusing on how they make decisions, recall information, perceive problems, and solve them to uncover their mental models.
When This Method Fits
Typical duration
Days – Weeks
Typical cost
Medium
Fidelity level
Live Full, Live Limited
Stage
Validation
Hypothesis type
Execution
Goal type
Deepen product-market fit, Drive corporate innovation / R&D, Improve operational efficiency
Randomization
N/A
Study design
Individual case report
Minimum units needed
5
1Best Fit When
Best when usability problems seem to stem from how users think about and interpret a task, not just what they click.