Task Modeling and Analysis
Task modeling and analysis are crucial for understanding user interactions in Human-Computer Interaction (HCI). This chapter explores Hierarchical Task Analysis (HTA) as a method for decomposing tasks, alongside Engineering Task Models like ConcurTaskTrees (CTT) which provide formal representations of user tasks. Both techniques aim to improve the design of user interfaces by clarifying the relationship between user actions and system responses.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Hierarchical Task Analysis (HTA) systematically breaks down complex user tasks into manageable parts.
- Engineering Task Models, particularly ConcurTaskTrees (CTT), provide formal and visual frameworks for detailing user interactions and temporal relationships.
- Effective task modeling helps designers align user intentions with system functionality, enhancing usability and efficiency.
Key Concepts
- -- Hierarchical Task Analysis (HTA)
- A structured method that decomposes tasks into hierarchical sub-tasks to understand user goals and interactions.
- -- ConcurTaskTrees (CTT)
- A formal notation for modeling tasks that incorporates temporal relationships and concurrency, enhancing clarity in task representation.
- -- Decomposition
- The process of breaking down complex tasks into smaller sub-tasks to facilitate easier analysis and design.
- -- Plans in HTA
- These outline the conditions and sequences for executing operations under various tasks, specifying how goals are achieved.
Additional Learning Materials
Supplementary resources to enhance your learning experience.