Sullivan Case Study

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Sullivan Case Study

  1. 1. SIMS 213: User Interface Design & Development Marti Hearst Tues, Jan 23, 2007
  2. 2. Today <ul><li>Today: </li></ul><ul><ul><li>Coordinate Project Topics and Teams </li></ul></ul><ul><ul><li>Discuss Sullivan Reading </li></ul></ul><ul><li>Next time: </li></ul><ul><ul><li>The User-Centered Design Process </li></ul></ul>
  3. 3. User Interface TimeLine <ul><ul><li>Xerox Alto </li></ul></ul><ul><ul><ul><li>Circa ’73 </li></ul></ul></ul><ul><ul><ul><li>http://www.digibarn.com/collections/systems/xerox-alto / </li></ul></ul></ul><ul><ul><li>Xerox Star </li></ul></ul><ul><ul><ul><li>Circa ‘81 </li></ul></ul></ul><ul><ul><ul><li>http://members.fortunecity.com/pcmuseum/alto. html </li></ul></ul></ul><ul><ul><li>Unofficial Apple timeline: </li></ul></ul><ul><ul><ul><li>http://fp3.antelecom.net/gcifu/applemuseum/index. html </li></ul></ul></ul><ul><ul><li>Apple Lisa: </li></ul></ul><ul><ul><ul><li>Lisa 1 and 2, circa ’83-’85 </li></ul></ul></ul><ul><ul><ul><li>http://en.wikipedia.org/wiki/Apple_Lisa# Software </li></ul></ul></ul><ul><ul><ul><li>http://fp3.antelecom.net/gcifu/applemuseum/lisa2. html </li></ul></ul></ul><ul><ul><ul><li>http://www.digibarn.com/collections/screenshots/Apple%20Lisa / </li></ul></ul></ul><ul><ul><li>Apple Macintosh </li></ul></ul><ul><ul><ul><li>’ 84-’86 </li></ul></ul></ul><ul><ul><ul><li>http ://www.digibarn.com/collections/screenshots/Apple%20Macintosh%20v1-1%20-%201984/ </li></ul></ul></ul><ul><ul><li>Apple 2gs </li></ul></ul><ul><ul><ul><li>’ 86-’92 </li></ul></ul></ul><ul><ul><ul><li>http://fp3.antelecom.net/gcifu/applemuseum/iigs.html </li></ul></ul></ul><ul><ul><li>Mac II </li></ul></ul><ul><ul><ul><li>Circa ’87-90 </li></ul></ul></ul><ul><ul><ul><li>http://fp3.antelecom.net/gcifu/applemuseum/mac2. html </li></ul></ul></ul><ul><ul><li>Windows 3.0 </li></ul></ul><ul><ul><ul><li>Released ’90 </li></ul></ul></ul><ul><ul><ul><li>http://en.wikipedia.org/wiki/Image:Windows_3.11_workspace. png </li></ul></ul></ul><ul><ul><li>Windows 95 </li></ul></ul><ul><ul><ul><li>Released ’95 </li></ul></ul></ul><ul><ul><ul><li>http://en.wikipedia.org/wiki/Windows_95 </li></ul></ul></ul>
  4. 4. Discussion <ul><li>Kent Sullivan, The Windows 95 User Interface: A Case Study in Usability Engineering , CHI 1996. </li></ul><ul><li>A case study of the iterative design process. </li></ul><ul><li>What are some of the important points? </li></ul><ul><ul><ul><li>Only 12 people on the entire Win 95 interface design team! </li></ul></ul></ul>
  5. 5. Sullivan Case Study <ul><li>Interesting points about early users: </li></ul><ul><ul><li>Beginning users had problems with: </li></ul></ul><ul><ul><ul><li>Finding a non-visible program, double-clicking to activate, using hidden menus, finding minimized windows, file system hierarchy </li></ul></ul></ul><ul><li>Initially didn’t want to introduce too many new things </li></ul><ul><li>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. </li></ul><ul><ul><li>http://acm.org/sigchi/chi96/proceedings/desbrief/Sullivan/kds_txt.htm </li></ul></ul>
  6. 6. Sullivan Case Study <ul><li>Had an offsite and rethought everything. </li></ul><ul><ul><li>The need to rapidly iterate </li></ul></ul><ul><ul><ul><li>Waterfall design method (compartmentalized; UI done at the end during quality assurance stage) would produce an unusable product. </li></ul></ul></ul><ul><ul><ul><li>Jettison the giant design spec </li></ul></ul></ul><ul><ul><ul><li>Encouraged closer interaction and “hallway” conversations </li></ul></ul></ul>
  7. 7. Sullivan Case Study <ul><li>Had an offsite and rethought everything. </li></ul><ul><ul><li>Method Adopted: </li></ul></ul><ul><ul><ul><li>Find most common tasks, and test on those </li></ul></ul></ul><ul><ul><ul><li>Compare to a baseline (Windows 3.1) </li></ul></ul></ul><ul><ul><ul><li>Use rapid prototyping tools </li></ul></ul></ul><ul><ul><ul><li>Keep testing with users. </li></ul></ul></ul><ul><ul><ul><li>Focus on scaffolding (beginner -> intermediate-expert) </li></ul></ul></ul><ul><ul><ul><li>Give up on too much backwards-compatibility with 3.1 </li></ul></ul></ul><ul><ul><ul><li>Continually inform outsiders as well as team members about the design </li></ul></ul></ul>
  8. 8. Sullivan Case Study <ul><ul><li>Fine tuning with usablity tests </li></ul></ul><ul><ul><ul><li>Holistic interface test in the lab </li></ul></ul></ul><ul><ul><ul><ul><li>64 phases of lab testing </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Many participants! (560 total) </li></ul></ul></ul></ul><ul><ul><ul><li>Longitudinal field study </li></ul></ul></ul><ul><ul><ul><li>Other testing on components </li></ul></ul></ul><ul><ul><ul><li>No detail of the orginal design for W95 was retained. </li></ul></ul></ul><ul><ul><li>About Windows 3.1 </li></ul></ul><ul><ul><ul><li>… a good demonstration of what happens when usability is not taken into account </li></ul></ul></ul>

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