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  1. 1. Usability @ OSU Libraries <ul><ul><li>presented by the u-team </li></ul></ul>
  2. 2. Usability: defined <ul><li>Usability is about building products or web sites based on user experience, input and feedback. The product or site is built with the users' needs and goals taking center stage. </li></ul><ul><li>Usability reduces confusion and makes the product or site easy for users to accomplish their tasks. The payoff is in lower support costs and a better user experience. </li></ul>
  3. 3. 5 attributes of usability <ul><li>Learnability </li></ul><ul><li>Efficiency </li></ul><ul><li>Memorability </li></ul><ul><li>Errors </li></ul><ul><li>Satisfaction </li></ul>
  4. 4. Learnability <ul><li>How easy is it for users to accomplish basic tasks the first time they encounter the design? </li></ul>
  5. 5. Efficiency <ul><li>Once users have learned the design, how quickly can they perform tasks? </li></ul>Efficiency
  6. 6. Memorability <ul><li>When users return to the design after a period of not using it, how easily can they reestablish proficiency? </li></ul>
  7. 7. Errors <ul><li>How many errors do users make, how severe are these errors, and how easily can they recover from the errors? </li></ul>
  8. 8. Satisfaction <ul><li>How pleasant is it to use the design? </li></ul>
  9. 9. Usability Methods <ul><li>The word &quot;usability&quot; also refers to methods for improving ease-of-use during a web site’s design process. </li></ul><ul><li>Usability can be measured objectively through performance errors and productivity, and subjectively through user preferences and interface characteristics. </li></ul>
  10. 10. Some usability methods <ul><li>Ethnographic Studies </li></ul><ul><li>Scenarios and Personas </li></ul><ul><li>Task Analysis </li></ul><ul><li>Heuristic Evaluation </li></ul><ul><li>Card Sorting </li></ul><ul><li>Think-Aloud User testing </li></ul>
  11. 11. Think-Aloud user testing <ul><li>A method used to gather data in usability testing (not focus groups!). </li></ul><ul><li>Participants are asked to think aloud as they perform a set of specified tasks. </li></ul><ul><li>This enables observers to see first-hand the process of task completion. </li></ul>
  12. 12. Think-Aloud demo <ul><li>Task: Susan needs to find good task that shows dramatic change in redesign </li></ul><ul><li>Volunteers?? </li></ul>
  13. 13. Applying user testing <ul><li>Screen shot of redesign and talk about using the results from tests </li></ul><ul><li>Questions for us? </li></ul>
  14. 14. U-Team services <ul><li>Usability Education </li></ul><ul><li>Consultations </li></ul><ul><li>Usability Testing </li></ul><ul><ul><li>Comparative testing </li></ul></ul><ul><ul><li>Formal usability study </li></ul></ul><ul><ul><li>In-house testing </li></ul></ul><ul><ul><li>Data analysis </li></ul></ul><ul><li>Current Members: Alison Bobal, Kim Griggs, Susan McEvoy, Jane Nichols, Elizabeth Nielsen & Loretta Rielly </li></ul>
  15. 15. Explore more! <ul><li>Check out the u-team wiki page . </li></ul><ul><li>Jakob Nielsen’s Usability 101 </li></ul><ul><li>LITA Regional Institute User Centered Design Workshop January 19, 2006 </li></ul>