COAP:COAP-3150 - week 6: Difference between revisions

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==Usability testing==
==Usability testing==
===Heuristics and quick tests===
===Heuristics and quick tests===
;The 5 second rule<ref>Oli Gardner, The 5 second rule, http://unbounce.com/landing-page-optimization/the-5-second-rule-best-sites-of-2009-part-1/</ref>
====The 5 second rule<ref>Oli Gardner, The 5 second rule, http://unbounce.com/landing-page-optimization/the-5-second-rule-best-sites-of-2009-part-1/</ref>====
Upon landing on a homepage a user should be able to figure out in 5 seconds - [http://unbounce.com/landing-page-optimization/the-5-second-rule-best-sites-of-2009-part-1/ The 5 second rule]
Upon landing on a homepage a user should be able to figure out in 5 seconds - [http://unbounce.com/landing-page-optimization/the-5-second-rule-best-sites-of-2009-part-1/ The 5 second rule]
*What is it about?
*What is it about?
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*Is it newsworthy?
*Is it newsworthy?


;[http://www.useit.com/papers/heuristic/heuristic_list.html Ten Usability Heuristics] by Jakob Nielsen  
====[http://www.useit.com/papers/heuristic/heuristic_list.html Ten Usability Heuristics] by Jakob Nielsen====
Reduced to five in [http://www.useit.com/alertbox/20030825.html Usability 101].
Reduced to five in [http://www.useit.com/alertbox/20030825.html Usability 101].
*'''Learnability''': How easy is it for users to accomplish basic tasks the first time they encounter the design?
*'''Learnability''': How easy is it for users to accomplish basic tasks the first time they encounter the design?
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*[[User interaction and user interface design]] - definitions and distinction
*[[User interaction and user interface design]] - definitions and distinction


;analysing the user tasks
===analysing the user tasks===
;designing the test
===designing the test===


===Examples===
===Examples===

Revision as of 21:48, 23 February 2012

Interaction styles

Usability testing

Heuristics and quick tests

The 5 second rule[1]

Upon landing on a homepage a user should be able to figure out in 5 seconds - The 5 second rule

  • What is it about?
  • Do I care?
  • Is it trustworthy?
  • How do I participate?
  • Is it newsworthy?

Ten Usability Heuristics by Jakob Nielsen

Reduced to five in Usability 101.

  • 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?

Borrowing from Davis' Technology Acceptance Model, Nielsen defines useful web design as

  • Utility = whether it provides the features you need.
  • Usability = how easy & pleasant these features are to use.
  • Useful = usability + utility.

Related pages

analysing the user tasks

designing the test

Examples

Bad usability in (web) design

Designing interaction

Webforms (self-study)

See HTML forms tutorial

Javascript (self-study)

See and Javascript tutorial - basics

Publish a site

Assignment 8 - Functional prototype

Links

References

  • NIELSEN, J., (1993) Usability engineering. Boston, Academic Press.
  • SCAPIN, D.L. and BASTIEN, J.M.C. (1997). Ergonomic criteria for evaluating the ergonomic quality of interactive systems. Behavior & Information Technology, 1997, 17 (4/5), 220-231.
  • SHNEIDERMAN, B. (1992). Designing the user interface : strategies for effective human-Computer-Interaction. (Chap 3, 4 and 5). 2nd ed., Addison-Whesley Publishing Company.