Defending design decisions with usability evidence: a case study

  • Authors:
  • Erin Friess

  • Affiliations:
  • Carnegie Mellon University, Pittsburgh, PA, USA

  • Venue:
  • CHI '08 Extended Abstracts on Human Factors in Computing Systems
  • Year:
  • 2008

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Abstract

This case study takes a close look at what novice designers discursively use as evidence to support design decisions. User-centered design has suggested that all design decisions should be made with the concern for the user at the forefront, and, ideally, this concern should be represented by findings discovered within user-centered research. However, the data from a 12-month longitudinal study suggests that although these novice designers are well-versed with user-centered design theory, in practice they routinely do not use user-centered research findings to defend their design decisions. Instead these novice designers use less definitive and more designer-centered forms of evidence. This move away from the user, though perhaps unintentional, may suggest that design pedagogy may need to be re-evaluated to ensure that novice designers continue to adhere to the implications of user-centered research throughout the design process.