Usability

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Revision as of 12:28, 26 April 2011 by Tobi (talk)
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Aims

  • provide further information and understanding in the following areas:
    • users ("who?")
    • tasks ("what?", "how?")
    • context ("where, when, why?")

Proposed Method

  • Mental Models by Indi Young
  • Further information on this method is available, see:
    • The book (rosenfeld media) Mental Models
    • excerpts available for online reading via paperc (German website, book in English)
    • The author explaining the method in this Video
    • diagrams from the book on flickr

Connections to Exsiting Research

details

  • qualitative method
  • based on open interviews (no questionnaires)

Course of Actions

  1. define audience (already existing: user scenarios)
  2. recruit participants, set scope and conduct interviews
    • 4 interviews per audience segment
    • focus: tasks, behaviours and philosophies of users
  3. analyze results
    • distillation of tasks, behaviours and philosophies into patterns
    • create graphic of patterns in a mental model
    • oppose mental model vs. planned and existing functionality (gap analysis)
    • adjust user scenarios / audience segments
    • derive stragety for development

pros and cons

  • (+) pros
    • fundamental research, broad focus
    • detailed analysis of users and their tasks
    • research is built on existing findings
    • verification of user scenarios / audience segments
    • based on tasks and behavior
    • adaptable / scalable method
    • supports strategic vision and long-term development
    • revision and clarification of user scenarios
  • (-) cons
    • fundamental research, broad focus
    • no immediate improvements
    • complex method
    • not all existing findings are considered


Deliverables

  • primer (20-40 page pdf about users, tasks, context)
  • Mental Model Diagram
    • 1 diagram per audience segment
    • tasks organized in "Mental Spaces" of users
    • justified audience segments based on tasks
    • gap analysis