Presentation on theme: "The Interaction. Overview Interaction Models understand human-computer communication Ergonomics Physical characteristics of interaction Context Social."— Presentation transcript:
Overview Interaction Models understand human-computer communication Ergonomics Physical characteristics of interaction Context Social Organizational
Task Analysis Domain - area of expertise e.g. web site design Concepts - important aspects e.g. HTML, Java, JPEG, editor, browser Task - operation within domain e.g. design a web page Intention - specific action toward goal e.g. insert a picture here
The human action cycle is a psychological model which describes the steps humans take when they interact with computer systemspsychological model humanscomputer systems The three stages of the human action cycle (goal formation, execution and evaluation). The model is divided into three stages of seven steps in total, and is (approximately) as follows: Goal formation stage 1. Goal formation. Execution stage 2. Translation of goals into a set of (unordered) tasks required to achieve the goal. 3. Sequencing the tasks to create the action sequence. 4. Executing the action sequence. Evaluation stage 5. Perceiving the results after having executed the action sequence. 6. Interpreting the actual outcomes based on the expected outcomes. 7. Comparing what happened with what the user wished to happen.
The Execution-Evaluation Cycle Evaluation Perceive the system state Interpret the system state Evaluate the system state