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Design principles applied to map design & usability

Design principles applied to map design & usability

Keynote for my session at #FOSS4G 2011

Sergio Álvarez Leiva

October 01, 2011

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  1. _Classical Conditioning A technique used to associate a stimulus with

    an unconscious physical or emotional response.
  2. _Golden Ratio A ration within the elements of a form,

    such a height to width, approximating 0.618.
  3. _Consistency & Constraint The usability of a system is improved

    when similar parts are expresed in similar ways.
  4. _Fitt's law The time required to move to a target

    is a function of the target size and distance to the target - plus the precision needed -.
  5. _Forgiveness Designs should help people avoid errors and minimize the

    negative consequences of errors when they do occur.
  6. _Use of Color Color is used in design to attract

    attention, group elements, indicate meaning, and enhance aesthetics.
  7. _Interference Effects A phenomenon in which mental processing is made

    slower and less accurate by competing mental processes.
  8. Black Red Yellow Purple Green Blue Yellow Red White White

    Blue Green Black Brown Orange Green Orange Yellow Red
  9. _Inantentional Blindness The failure to cognitively process a stimulus that

    is presented in clear view, leaving the observer without any awareness or memory of the stimulus.
  10. _Progressive disclosure A strategy for managing information complexity in which

    only necessary or requested information is displayed at any given time.
  11. _Visibility The usability of a system is improved when its

    status and methods of use are clearly visible.
  12. _Framing A technique that influences decision making and judgement by

    manipulating the way information is presented.