Web Site Usability

A trail of 4 pages, marked with comments, by pferrel
About this trail:
Jacob Nielsen on the effect on screen resolution of site design.
4 marks in this trail
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Jakob Nielsen on Usability in Web design.
  • Learnability: How easy is it for users to accomplish basic tasks the first time they encounter the design?
  • Efficiency: Once users have learned the design, how quickly can they perform tasks?
  • Memorability: When users return to the design after a period of not using it, how easily can they reestablish proficiency?
  • Errors: How many errors do users make, how severe are these errors, and how easily can they recover from the errors?
  • Satisfaction: How pleasant is it to use the design?
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How do do a fast cheap usability study.



  • An independent review by an outside expert. 
  • A competitive study that compares your design with that of three competitors.
  • A benchmark study to track your usability metrics and see how much better you're doing than last year.


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