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					September 6th, 2001

•   3. Cognitive Frameworks
•   17,18: User-Centered Design
•   Norman Ch. 1 (discussion)
•   Demonstration of Kuka
•   Usage-Centered Design Example
•   First Assignment
ICS 463: Intro to Human Computer
       Interaction Design

      2. Cognitive Frameworks
            Dan Suthers
Information Processing Psychology

• Humans as information processors

                   Attention



                         Response    Response
Encoding   Comparison    Selection   Execution


                   Memory
Multi-Store Model of Memory

• Sensory: milliseconds
  – Iconic
  – Auditory
• Short Term (Working): seconds
  – “The magic number 7 plus or minus 2”
• Long Term: permanent(?)
Information-Processing HCI

• Model Human Processor
  – Perception
  – Cognitive
  – Motor
• GOMS (Goals, Operations, Methods
  and Selection)
  – quantitative predictions of performance
Variants on Information Processing

• Computational
  – Scripts, Plans, Goals and Memory
• Parallel Distributed Processing
  (Connectionist)
  – Brain metaphor
Distributed/Situated Cognition

• Cognition is distributed across
  individuals and artifacts
• “Cognition in the wild”: Study
  cognitive activities as embodied and
  situated in a context
Analysis of Functional Systems

• How information is propagated
  through the technological, cognitive,
  social, and organizational system
• How information is transformed
  between different representational
  states of objects in the system, with
  consequences for action
• Situation awareness: implicit as well
  as explicit communication
Analysis of Breakdowns

• How coordination of activities breaks
  down due to interactions between
  multiple components of the functional
  system
• Ways of improving the functional
  system
• Example: Shared displays

				
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