Human Information Processing an introduction by JasonDetriou


									   Human Information
Processing: an introduction

      Eliza-Nefeli Tsaoussis
Outline of the presentation:

-Human Information Processing?


-Cognitive load and Skilled performance
Where does HIP come from?

- A will to optimize   HCI
-Computer Science meets Cognitive Science:

   Psychology, Neuroscience, Linguistics, AI, Philosophy

                       Human user models to predict how
                       an interactive system can be used.
Study areas

-Cognitive process:
   the sum of psychological functions of the user interacting
   with a system

   study of sensory organs' response to stimuli of the system

   interpretation, selection, categorization of stimuli

-Motor control:
   physical response of the user using motor skills

-Supply and demand problem
   Critical and limited resources

-Quality and quantity problem
   Resource limited Vs Data limited tasks
             - quality of input signal
             - quality of memory

Design solutions?
   -->Improve data quality and minimize resource consumption
Task complexity measure

Cognitive load:
  resource demand WRT learning time, attention level
  (fatigue, stress), proneness to error...

Issues observed:
    competition between tasks-interference leads to poorer

While designing:
   reduce load
   reduce likelihood of competition
   improve data
Skilled performance

-Skills = automatic task performance:
   less resources needed
   lighter cognitive load
   less likelihood of interference
           allows multiple task performance

-Different learning curves: training time and effort.

                            Design dilemma...
Design goals

-Juggle with resource management and skilled performance:
            Improve data quality
            Reduce cognitive load
            Enhance skill transfer
            Generate feedback

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