Sims 213: User Interface Design & Development Marti Hearst



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SIMS 213: User Interface Design & Development

  • Marti Hearst

  • Tues, Jan 23, 2007


Today

  • Today:

    • Coordinate Project Topics and Teams
    • Discuss Sullivan Reading
  • Next time:

    • The User-Centered Design Process


User Interface TimeLine

    • Xerox Alto
      • Circa ’73
      • http://www.digibarn.com/collections/systems/xerox-alto/
    • Xerox Star
      • Circa ‘81
      • http://members.fortunecity.com/pcmuseum/alto.html
    • Unofficial Apple timeline:
      • http://fp3.antelecom.net/gcifu/applemuseum/index.html
    • Apple Lisa:
      • Lisa 1 and 2, circa ’83-’85
      • http://en.wikipedia.org/wiki/Apple_Lisa#Software
      • http://fp3.antelecom.net/gcifu/applemuseum/lisa2.html
      • http://www.digibarn.com/collections/screenshots/Apple%20Lisa/


Discussion

  • Kent Sullivan, The Windows 95 User Interface: A Case Study in Usability Engineering, CHI 1996.

  • A case study of the iterative design process.

  • What are some of the important points?

      • Only 12 people on the entire Win 95 interface design team!


Sullivan Case Study

  • Interesting points about early users:

  • Initially didn’t want to introduce too many new things

  • However, initial studies on 3.1 and the 95 prototype indicated that the starting point was just too poor, and more radical revision was needed.

    • http://acm.org/sigchi/chi96/proceedings/desbrief/Sullivan/kds_txt.htm


Sullivan Case Study

  • Had an offsite and rethought everything.

    • The need to rapidly iterate
      • Waterfall design method (compartmentalized; UI done at the end during quality assurance stage) would produce an unusable product.
      • Jettison the giant design spec
      • Encouraged closer interaction and “hallway” conversations


Sullivan Case Study

  • Had an offsite and rethought everything.

    • Method Adopted:
      • Find most common tasks, and test on those
      • Compare to a baseline (Windows 3.1)
      • Use rapid prototyping tools
      • Keep testing with users.
      • Focus on scaffolding (beginner -> intermediate-expert)
      • Give up on too much backwards-compatibility with 3.1
      • Continually inform outsiders as well as team members about the design


Sullivan Case Study

    • Fine tuning with usablity tests
      • Holistic interface test in the lab
        • 64 phases of lab testing
        • Many participants! (560 total)
      • Longitudinal field study
      • Other testing on components
      • No detail of the orginal design for W95 was retained.
    • About Windows 3.1
      • … a good demonstration of what happens when usability is not taken into account


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