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Interaction Design

Interaction Design. Chapter 10. The Human Action Cycle. Psychological model Describes steps users take to interact with computer systems Use actions and tasks to achieve goals. The Human Action Cycle. Goal Formation Execution stage Translate goals into tasks Planning the action sequence

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Interaction Design

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  1. Interaction Design Chapter 10

  2. The Human Action Cycle • Psychological model • Describes steps users take to interact with computer systems • Use actions and tasks to achieve goals

  3. The Human Action Cycle • Goal Formation • Execution stage • Translate goals into tasks • Planning the action sequence • Executing action sequence • Evaluation stage • Perceiving what's happening • Interpreting the outcome as per expectations • Comparing what happened with what was wanted

  4. Human Action Cycle • Can be quick or fast • Can be broken down into smaller Human action cycles • Flexible • Differs from person to person

  5. Goal Formation • One step • Think of a goal

  6. Execution Stage • Involves thinking and action • Thinking • Translate goals into tasks • Planning the action sequence • Action • Executing action sequence

  7. Evaluation stage • All thinking • Comparing expectation with result

  8. HAC Influence on the Design Process • Predict difficulties • Changes to environment and technology • Skills and training

  9. Explaining the System to the User • The user has to understand the UI • The user uses • Prior knowledge • Documentation • Training • We use • Designer and User model, and the System image

  10. Designer Model • What the designer knows • Structural and operational • Complete and clear

  11. User Model • What the user knows • Functional • Sometimes incorrect

  12. System Image • Communicate design to user • Contains • UI • Documentation • Training • What the user knows

  13. UI and the User • Needs to meet the user model’s expectation • Needs to meet the functionality of the designer model • Take into account older user models

  14. Metaphor • Technically all computer UI’s • Used to make an accurate user model • Used to unify UI

  15. Problem’s with Metaphors • Adhering too strictly • Outside user experience • Make sure all metaphors connect

  16. Making a metaphor • Task scenarios, use cases, requirements gathering • Make sure makes sense to user • Make several

  17. Questions?

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