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Post-hoc testing

This document explores the concept of post-hoc testing, emphasizing that human nature resembles a living tree requiring growth and development, rather than a machine built for predetermined tasks. It presents methods for evaluation, including user testing, which serves as a proofreading mechanism to improve designs. The importance of identifying needs, evaluating design, and providing feedback for future iterations is highlighted. Interface design is framed as an evolutionary process, reinforcing the significance of post-hoc evaluations in enhancing outcomes.

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Post-hoc testing

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  1. Post-hoc testing IST 331 - Olivier Georgeon April 22nd 2010

  2. Human nature is not a machine to be built after a model - and set to do exactly the work prescribed to it - but a tree, which requires to grow and develop itself on all sides, according to the tendency of the inward forces which make it a living thing.John Stuart Mill, On Liberty (1859)

  3. Evolutionist process Design Use

  4. Why post-hoc testing? • Avoid recalls. • Identify target. • Identify need for formation or documentation. • Final setup. • Evaluate the design. • Because all people (including designers) make mistakes (i.e. user-testing can be used as a type of proof-reading). • Provide feedback for the next iteration.

  5. Methods • Same method as preliminary studies • Questionnaires and Interviews • Observational studies • Verbal protocol • Visual protocol • Use unsolicited comments

  6. Activity analysis tools • Noldus • http://www.noldus.com • Interact • http://www.mangold-international.com/ • Abstract • http://liris.cnrs.fr/abstract/

  7. Example Local Youtube

  8. Youtube

  9. Republic of Ireland [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] 1/10/1973 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] 4/3/1970 5/20/2007 [7] Irish National Liberation Army (INLA) [8] Saor Eire (Irish Republican Group) [9] Official Irish Republican Army (OIRA)/ [10] Irish People's Liberation Organization (IPLO) [11] Irish Republican Army (IRA) [1] Ulster Volunteer Force (UVF) [2] Ulster Freedom Fighters (UFF) [3] Protestant Extremists [4] Loyalist Volunteer Forces (LVF) [5] Red Hand Commandos [6] Unknown

  10. Conclusion • Interface design is an evolutionist process. • Post-hoc evaluation also matters. • Lot of room for IST research.

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