Usability Overview by Craig Tomlin

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    Usability Overview by Craig Tomlin - Presentation Transcript

    1. Usability: An Overview W Craig Tomlin, Certified Usability Analyst www.usefulusability.com [email_address]
    2. What Usability Is
      • A development approach that includes end-user feedback as part of the software development lifecycle:
      wcraigtomlin@gmail.com | (805) 501-8612 Usability test: end users try to conduct specific tasks
    3. What Usability Is
      • A development approach that includes end-user feedback as part of the software development lifecycle:
        • “ Usability is an approach to product development that incorporates direct user feedback throughout the development cycle in order to reduce costs and create products and tools that meet user needs.”*
      *Source: Usability Professionals Association wcraigtomlin@gmail.com | (805) 501-8612 Usability test: end users try to conduct specific tasks
    4. What Usability Is
      • Usability adds to the bottom line by:
        • Limiting the need for expensive post-launch “revisions” of software
      wcraigtomlin@gmail.com | (805) 501-8612
    5. What Usability Is
      • Usability adds to the bottom line by:
        • Limiting the need for expensive post-launch “revisions” of software
        • Improving user efficiency, which increases conversion
      wcraigtomlin@gmail.com | (805) 501-8612
    6. What Usability Is
      • Usability adds to the bottom line by:
        • Limiting the need for expensive post-launch “revisions” of software
        • Improving user efficiency, which increases conversion
        • Reducing the time it takes to learn to use an application
      wcraigtomlin@gmail.com | (805) 501-8612
    7. What Usability Is
      • Usability adds to the bottom line by:
        • Limiting the need for expensive post-launch “revisions” of software
        • Improving user efficiency, which increases conversion
        • Reducing the time it takes to learn to use an application
        • Increasing user satisfaction, which positively impacts brand attitudes
      wcraigtomlin@gmail.com | (805) 501-8612
    8. What Usability Isn’t
      • A Focus Group:
        • Focus groups are used for eliciting new ideas in a “group think” environment
      Focus groups explore ideas in a “group-think” environment wcraigtomlin@gmail.com | (805) 501-8612
    9. What Usability Isn’t
      • A Focus Group:
        • Focus groups are used for eliciting new ideas in a “group think” environment
        • Focus groups do not test specific tasks on a “1-on-1” basis, thus are not used for usability testing
      Focus groups explore ideas in a “group-think” environment wcraigtomlin@gmail.com | (805) 501-8612
    10. What Usability Isn’t
      • A Survey:
        • Surveys gather attitudes, beliefs & perceptions
      wcraigtomlin@gmail.com | (805) 501-8612
    11. What Usability Isn’t
      • A Survey:
        • Surveys gather attitudes, beliefs & perceptions
        • Surveys require large numbers of participants to reduce sampling error
      wcraigtomlin@gmail.com | (805) 501-8612
    12. What Usability Isn’t
      • A Survey:
        • Surveys gather attitudes, beliefs & perceptions
        • Surveys require large numbers of participants to reduce sampling error
        • Often, what people say in a survey vs. how they actually behave are quite different
      wcraigtomlin@gmail.com | (805) 501-8612
    13. What Usability Isn’t
      • A Survey:
        • Surveys gather attitudes, beliefs & perceptions
        • Surveys require large numbers of participants to reduce sampling error
        • Often, what people say in a survey vs. how they actually behave are quite different
        • Usability testing typically needs only 5-10 users, because the tasks are being tested, not the users
        • And actual user behavior is observed, not opinions
      wcraigtomlin@gmail.com | (805) 501-8612
    14. What Usability Isn’t
      • Expensive:
        • Usability can be conducted without an expensive facility, and with a minimum of resources using web-based tools
      wcraigtomlin@gmail.com | (805) 501-8612
    15. What Usability Isn’t
      • Expensive:
        • Usability can be conducted without an expensive facility, and with a minimum of resources using web-based tools
      • Time-consuming:
        • Best results occur with only 5-10 users in a short period of time, each user conducting a 1 or 2 hour test session
      wcraigtomlin@gmail.com | (805) 501-8612
    16. What Usability Isn’t
      • Expensive:
        • Usability can be conducted without an expensive facility, and with a minimum of resources using web-based tools
      • Time-consuming:
        • Best results occur with only 5-10 users in a short period of time, each user conducting a 1 or 2 hour test session
        • Preliminary results can be observed while testing, and results compiled in days, not weeks
      wcraigtomlin@gmail.com | (805) 501-8612
    17. Example – Usable OK, this looks like product categories… TASK: Find an electronic kit for a boy’s birthday wcraigtomlin@gmail.com | (805) 501-8612
    18. Example – Usable OK, this looks like product categories… … and these are a few special deals TASK: Find an electronic kit for a boy’s birthday wcraigtomlin@gmail.com | (805) 501-8612
    19. Example – Usable OK, this looks like product categories… Science Town, electronic kits must be here CLICK … and these are a few special deals TASK: Find an electronic kit for a boy’s birthday wcraigtomlin@gmail.com | (805) 501-8612
    20. Example – Not As Usable Hmmm, where do I start? wcraigtomlin@gmail.com | (805) 501-8612 TASK: Find an electronic kit for a boy’s birthday
    21. Example – Not As Usable Hmmm, where do I start? Are these products? Is this the latest product catalog? wcraigtomlin@gmail.com | (805) 501-8612 TASK: Find an electronic kit for a boy’s birthday
    22. Example – Not As Usable Hmmm, where do I start? Are these products? What’s this? What’s this for? Is this the latest product catalog? wcraigtomlin@gmail.com | (805) 501-8612 TASK: Find an electronic kit for a boy’s birthday
    23. A Cause of Usability Failure
      • Many usability failures are caused by designing systems that are not in alignment with the user’s “Mental Map” of a task-flow:
      wcraigtomlin@gmail.com | (805) 501-8612
    24. A Cause of Usability Failure
      • Many usability failures are caused by designing systems that are not in alignment with the user’s “Mental Map” of a task-flow:
      wcraigtomlin@gmail.com | (805) 501-8612 Step 1 – Find product categories Step 2 – Find science kits Step 3 – Find electronic kit for boy
    25. A Cause of Usability Failure wcraigtomlin@gmail.com | (805) 501-8612 Step 1 – Find product categories Step 2 – Find science kits Step 3 – Find electronic kit for boy Aligned with Mental Map Not Aligned with Mental Map
      • Testing at key points of the Software Development Life Cycle improves usability, because of alignment with the user’s Mental Map
      Usability Testing in the SDLC wcraigtomlin@gmail.com | (805) 501-8612
      • Testing at key points of the Software Development Life Cycle improves usability, because of alignment with the user’s Mental Map
      Usability Testing in the SDLC wcraigtomlin@gmail.com | (805) 501-8612
      • Testing at key points of the Software Development Life Cycle improves usability, because of alignment with the user’s Mental Map
      Usability Testing in the SDLC wcraigtomlin@gmail.com | (805) 501-8612
      • Testing at key points of the Software Development Life Cycle improves usability, because of alignment with the user’s Mental Map
      Usability Testing in the SDLC wcraigtomlin@gmail.com | (805) 501-8612
      • Testing at key points of the Software Development Life Cycle improves usability, because of alignment with the user’s Mental Map
      Usability Testing in the SDLC wcraigtomlin@gmail.com | (805) 501-8612
    26. Time vs. Impact on Design wcraigtomlin@gmail.com | (805) 501-8612 Usability’s biggest impact is early in the development process, due to the ability to make changes at minimal resource cost
    27. Time vs. Impact on Design Early Development Production Prototype Impact on Design Time wcraigtomlin@gmail.com | (805) 501-8612 Usability’s biggest impact is early in the development process, due to the ability to make changes at minimal resource cost
    28. Time vs. Impact on Design Early Development Production Prototype Impact on Design Time Ability to Make Changes “ Cost” to Make Changes wcraigtomlin@gmail.com | (805) 501-8612 Usability’s biggest impact is early in the development process, due to the ability to make changes at minimal resource cost
    29. Usability Benefits
      • Increasing usability = increasing application value
      • User-friendly systems are simple, they don’t make users think, so they’re faster & more satisfying, which result in increased:
      wcraigtomlin@gmail.com | (805) 501-8612
    30. Usability Benefits
      • Increasing usability = increasing application value
      • User-friendly systems are simple, they don’t make users think, so they’re faster & more satisfying, which result in increased:
      wcraigtomlin@gmail.com | (805) 501-8612
    31. Usability Benefits
      • Increasing usability = increasing application value
      • User-friendly systems are simple, they don’t make users think, so they’re faster & more satisfying, which result in increased:
      wcraigtomlin@gmail.com | (805) 501-8612
    32. Usability Benefits
      • Increasing usability = increasing application value
      • User-friendly systems are simple, they don’t make users think, so they’re faster & more satisfying, which result in increased:
      wcraigtomlin@gmail.com | (805) 501-8612
    33. Usability Benefits
      • Increasing usability = increasing application value
      • User-friendly systems are simple, they don’t make users think, so they’re faster & more satisfying, which result in increased:
      wcraigtomlin@gmail.com | (805) 501-8612
    34. 2 Types of Usability Tests
      • There are many variations of usability testing, but 2 general types:
      wcraigtomlin@gmail.com | (805) 501-8612
    35. 2 Types of Usability Tests
      • There are many variations of usability testing, but 2 general types:
      wcraigtomlin@gmail.com | (805) 501-8612
    36. 2 Types of Usability Tests
      • There are many variations of usability testing, but 2 general types:
      wcraigtomlin@gmail.com | (805) 501-8612
    37. Usability Testing Steps
      • An overview of 1-on-1 usability testing steps:
      wcraigtomlin@gmail.com | (805) 501-8612 Warning! Get your magnifying glass ready! (And this is just an overview)
    38. Usability Testing Steps
      • An overview of 1-on-1 usability testing steps:
      wcraigtomlin@gmail.com | (805) 501-8612
    39. Summary: Usability Overview
      • A development approach that includes end-user feedback as part of the software development lifecycle:
        • “ Usability is an approach to product development that incorporates direct user feedback throughout the development cycle in order to reduce costs and create products and tools that meet user needs.” (Usability Professional’s Association)
      wcraigtomlin@gmail.com | (805) 501-8612
    40. Summary: Usability Overview
      • A development approach that includes end-user feedback as part of the software development lifecycle:
        • “ Usability is an approach to product development that incorporates direct user feedback throughout the development cycle in order to reduce costs and create products and tools that meet user needs.” (Usability Professional’s Association)
      • Usability adds to the bottom line by:
        • Limiting the need for expensive post-launch “revisions” of software
        • Improving user efficiency, which increases conversion
        • Reducing the time it takes to learn how to use a new application
        • Increasing user satisfaction, which impacts brand attitudes
      wcraigtomlin@gmail.com | (805) 501-8612
    41. Appendix: Usability Resources
      • www.usefulusability.com – My usability web site
      • www.upassoc.org – Usability Professional’s Association
      • www.ukupa.org.uk – UPA in the United Kingdom
      • www.usability.gov – Copious usability information
      • www.sigchi.org – Special Interest Group on Computer-Human Interaction
      • www.usabilitynet.org – European Union usability group
      wcraigtomlin@gmail.com | (805) 501-8612
    42. Thank You! wcraigtomlin@gmail.com | (805) 501-8612 W Craig Tomlin, Certified Usability Analyst www.usefulusability.com [email_address]

    + Craig TomlinCraig Tomlin, 3 months ago

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    A brief overview of usability

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