106 | Task Analysis |
Workflow analysis, including user actions, system response, and environmental context
- Task encompasses any physical actions and mental processes as activities used to achieve goals and any information flows within the system environment.
- Designers typically incorporate a blend of qualitative and quantitative approaches to gain insight into user and task processes.
- The method targets user options, tools, decision points, common mistakes, corrections, inputs/outputs, frequency and importance of tasks, and risks of failure.
- Actions in task decomposition can be organized by categories, such as purpose, cues, objects, method, and options.
- A Hierarchical Task Analysis (HTA) typically results in tree diagrams or flowcharts, which can be verified by walk-through tests.
- Task analysis is useful for all design disciplines, ranging from navigation of software to wayfinding in the built environment.
See alsoContextual Inquiry • Ergonomic Analysis • Observation
A task analysis grid visualizes stakeholder scenarios and prioritized tasks. Each column describes a scenario, a task, and the subtasks necessary to complete the task.
Courtesy of Todd Zaki Warfel, Principal Designer, messagefirst | design studio
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