User Interaction Specification
- Most important approaches/notations to specifying interaction:
- State-Transition-Diagrams (STD)
- Petri Nets (PN)
- Goal-Operation-Methods-Selections (GOMS)
- User Action Notation (UAN)
- Aim to provide more detailed descriptions of interaction between user and system.
- Refinement of task model in terms closer to system.
- Provides medium of discussion and review between human factors designers and systems developers.