Usability Overview by Craig Tomlin
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Usability Overview by Craig Tomlin

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A brief overview of usability

A brief overview of usability

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Usability Overview by Craig Tomlin Usability Overview by Craig Tomlin Presentation Transcript

  • Usability: An Overview W Craig Tomlin, Certified Usability Analyst www.usefulusability.com [email_address]
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • What Usability Isn’t
    • A Survey:
      • Surveys gather attitudes, beliefs & perceptions
    wcraigtomlin@gmail.com | (805) 501-8612
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Example – Usable OK, this looks like product categories… TASK: Find an electronic kit for a boy’s birthday wcraigtomlin@gmail.com | (805) 501-8612
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 2 Types of Usability Tests
    • There are many variations of usability testing, but 2 general types:
    wcraigtomlin@gmail.com | (805) 501-8612
  • 2 Types of Usability Tests
    • There are many variations of usability testing, but 2 general types:
    wcraigtomlin@gmail.com | (805) 501-8612
  • 2 Types of Usability Tests
    • There are many variations of usability testing, but 2 general types:
    wcraigtomlin@gmail.com | (805) 501-8612
  • 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)
  • Usability Testing Steps
    • An overview of 1-on-1 usability testing steps:
    wcraigtomlin@gmail.com | (805) 501-8612
  • 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
  • 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
  • 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
  • Thank You! wcraigtomlin@gmail.com | (805) 501-8612 W Craig Tomlin, Certified Usability Analyst www.usefulusability.com [email_address]