Understanding Users

Understanding Users

1. Cognitive Aspects

   • 1) Inform the design of technologies
     • 2) Extend Human Capabilities
       • 3) Compensate for Weaknesses

2. Cognition: What happens in a persons head during the day

   • Cognitive Process:
     • Thinking, Remembering, Learning, Decision Making, Talking,
     • External Cognition
       • Externalizing Memory load
         • Computational Offloading
           • Annotating and Cognitive Tracing
   • Experiential Cognition
     • We percieve, act and react, to events effectively and effortlessly
       • Ex: Driving a car
   • Reflective Cognition
     • Involves thinking, comparing and decision making
       • Ex: Writing a book
   • Physical to Digital World
     • Ex: Electronic Post-its or To Do Lists
   • Conceptual Framework for Cognition
     • Mental Models
       • Information Processing
         • External Cognition
       • The more you use them the more you know
         • Wrong Mental Model: frozen mouse screen

3. Perception

   • Refers to how information is acquired in the environment via the different sense organs
     • Representations of information need to be designed to be perceptible and recognizable across different media
       • Preece,Jennifer. (2002). Interaction Design. United States of America: John Wiley & Sons Inc.

4. Millers Theory of Remembering

   • Only 7 options, No more than 7 icons, never more than 7 bullets in a list, only 7 items in a menu

5. Memory

   • 1) Do not overload users memories with complicated procedures
     • 2) Design interfaces that promote Recognition rather then recall
       • Provides Users with ways to encode electronic info

6. Learning

   • 1) Encourage exploration
     • Constrain and guide users

7. Design Implication

   • Provide additional hidden info that is easy to access for users who which to understand more about how to do an activity
     • Ex: Web Searching

8. Information Processing Model

   • Encoding
     • Comparison
       • Response Selection
         • Response Execution

9. ARANZA ESTRADA A01176250

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