UCD and Usability

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User Centered Design and its relationship with Usability

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UCD and Usability

  1. 1. 30 April, 2005 Usability and User Centered Design
  2. 2. User Centered Design <ul><li>Some Principles: </li></ul><ul><li>Mold and structure the user interface around how people can, want or need to work. </li></ul><ul><li>Test the validity of a design in real world tests with actual users. </li></ul><ul><li>Training & Documentation are no substitute for good design. </li></ul>
  3. 3. User Centered Design <ul><li>User Centered Design </li></ul><ul><ul><li>A Way of Doing Business </li></ul></ul><ul><ul><li>A Philosophy </li></ul></ul><ul><ul><li>An Attitude </li></ul></ul><ul><ul><li>A Focus </li></ul></ul><ul><ul><li>Embodied in a Methodology </li></ul></ul>UCD has an essential role in customer-centric business practices. All internet, intranet and other IT projects would benefit from the integration of UCD principles.
  4. 4. How Usability Fits In <ul><li>User Centered Design </li></ul><ul><ul><li>A Way of Doing Business </li></ul></ul><ul><ul><li>A Philosophy </li></ul></ul><ul><ul><li>An Attitude </li></ul></ul><ul><ul><li>A Focus </li></ul></ul><ul><ul><li>Embodied in a Methodology </li></ul></ul><ul><li>Usability </li></ul><ul><ul><li>THE Measurable Bi-product of UCD </li></ul></ul>Results in Increased Usability
  5. 5. Supporting Usability: The Five Pillars <ul><li>User Centered Design </li></ul><ul><ul><li>A Way of Doing Business </li></ul></ul><ul><ul><li>A Philosophy </li></ul></ul><ul><ul><li>An Attitude </li></ul></ul><ul><ul><li>A Focus </li></ul></ul><ul><ul><li>Embodied in a Methodology </li></ul></ul><ul><li>Supported by 5 Pillars </li></ul>Results in Increased Usability Efficient Easy-to-Learn Effective Error-Tolerant Engaging
  6. 6. Usability vs. Usefulness <ul><li>Usability ≠ Usefulness </li></ul><ul><ul><li>Usability, Ease of Use, is the Overall Goal </li></ul></ul><ul><ul><li>Usefulness/Utility = “Effectiveness”, only one aspect of Usability </li></ul></ul>Results in Increased Usability Efficient Easy-to-Learn Effective Error-Tolerant Engaging
  7. 7. Usability is on a Value Scale <ul><li>The usability of a project or product can be expressed as a value on a scale from very poor to excellent . </li></ul>Poor Usability Excellent Usability Results in Increased Usability
  8. 8. Increased Usability - ROI <ul><li>Increased Usability = Increased Productivity </li></ul><ul><ul><li>Reduced frustration </li></ul></ul><ul><ul><li>Increased throughput </li></ul></ul><ul><ul><li>Reduced learning curve </li></ul></ul><ul><ul><li>Increased uptake </li></ul></ul><ul><ul><li>Reduced training </li></ul></ul><ul><ul><li>Reduced support costs </li></ul></ul>Results in Increased Usability Efficient Easy-to-Learn Effective Error-Tolerant Engaging
  9. 9. The UCD Pillars – Varied Emphases <ul><li>Shifting the Weight </li></ul><ul><ul><li>Different projects will rely to varying extents on each pillar. </li></ul></ul><ul><ul><li>A consumer-facing site, for example, will require a heavier emphasis on “Engaging”. </li></ul></ul>Results in Increased Usability Efficient Easy-to-Learn Effective Error-Tolerant Engaging
  10. 10. UCD and Usability Strategies <ul><li>To practice UCD, we rely on: </li></ul><ul><ul><li>A solid business case </li></ul></ul><ul><ul><li>Well-defined use cases (the user’s goals) </li></ul></ul><ul><ul><li>Accurate user profiles </li></ul></ul><ul><li>To improve usability, we rely on: </li></ul><ul><ul><li>Understanding the user </li></ul></ul><ul><ul><li>Knowing & using standard practices </li></ul></ul><ul><ul><li>Testing and re-testing </li></ul></ul>Results in Increased Usability Efficient Easy-to-Learn Effective Error-Tolerant Engaging
  11. 11. UCD and Usability Roles <ul><li>To practice UCD, we rely on: </li></ul><ul><ul><li>A solid business case </li></ul></ul><ul><ul><li>Well-defined use cases (the user’s goals) </li></ul></ul><ul><ul><li>Accurate user profiles </li></ul></ul><ul><li>To improve usability, we rely on: </li></ul><ul><ul><li>Understanding the user </li></ul></ul><ul><ul><li>Knowing & using standard practices </li></ul></ul><ul><ul><li>Testing and re-testing </li></ul></ul>Roles & Responsibilities Business Analyst and UCD Expert Developers Usability Specialist
  12. 12. Mantras <ul><li>“ Test Early, Test Often” </li></ul><ul><li>“ Documentation, Help Files and Training are No Substitute for Good Usability” </li></ul>Results in Increased Usability Efficient Easy-to-Learn Effective Error-Tolerant Engaging

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