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What Is Usability? - PowerPoint PPT Presentation


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What Is Usability?. Usability is a quality attribute that assesses how easy Web sites are to use. “Usability" also refers to methods for improving ease-of-use during the design process. What Is Usability?.

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Presentation Transcript
What is usability
What Is Usability?

  • Usability is a quality attribute that assesses how easy Web sites are to use.

  • “Usability" also refers to methods for improving ease-of-use during the design process.


What is usability1
What Is Usability?

  • Learnability: How easy is it for users to accomplish basic tasks the first time they encounter the design?

  • Efficiency: Once users have learned the design, how quickly can they perform tasks?

  • Memorability: When users return to the design after a period of not using it, how easily can they reestablish proficiency?

  • Satisfaction: How pleasant is it to use the design?


User experience
User Experience

  • Usability is a necessary condition for Web survival, people will leave if:

    • A Web site is difficult to use

    • The homepage fails to clearly state what a company offers and what users can do on the site

    • Users get lost

    • Information is hard to read or doesn't answer users' key questions


User experience1
User Experience

  • A good user-experience should allow users to find what they want quickly and should help to eliminate frustration in not being able to find information


Usability issues
Usability Issues

  • Functionality

    • How easy is it for people to use the site?

  • Design

    • How well are the page elements arranged?

    • Is the site aesthetically pleasing?


Functionality
Functionality

  • It’s all about the Navigation

    • Grouping Navigational Elements





Functionality1
Functionality

  • Grouping Navigational Elements

    • Grouped by User Type, Activity, Order of Experience, etc…

  • Limit Number of User Groups (5-10)

    • Too Few: Incomplete Appearance

    • Too Many: Overwhelming to User


Functionality2
Functionality

  • It’s all about the Navigation

    • Grouping Navigational Elements

    • Simple Naming Schemes


Functionality3
Functionality

  • KSU Admissions Opportunities & Application Process

  • Donations & Fundraising Drive / Donations of Clothes & Toys

  • KSU UNICEF Chapter Fundraising Effort For Displaced Children

  • Campus Employment Opportunities for Displaced Individuals

  • English Language Support for Displaced Individuals

  • Calendar of Campus Activities

  • Admissions & Application

  • Donations & Fundraising

  • KSU UNICEF

  • Campus Employment

  • ESOL Support

  • Campus Activities


Functionality4
Functionality

  • Simple Naming Schemes

    • Use Terms People Are Familiar With (About Us, FAQ, Contact, etc…)

    • Concepts Should Be Conveyed In Two Words or Less

    • Unconventional Naming Schemes = High Probability In Confusing Your User


Functionality5
Functionality

  • It’s all about the Navigation

    • Grouping Navigational Elements

    • Simple Naming Schemes

    • Clear/Easy-to-Understand Labeling


Functionality6
Functionality

  • Clear/Easy-to-Understand Labeling

    • Navigation Options Should Be Easy to Find and Readable

    • Outside the Box for the Sake of Be Different Can Seriously Negatively Impact a Site’s Usability

    • Just Because a Concept Makes Sense To You Doesn’t Mean That Your Users Will “Get It”


Functionality7
Functionality

  • It’s all about the Navigation

    • Grouping Navigational Elements

    • Simple Naming Schemes

    • Clear/Easy-to-Understand Labeling

    • Page-to-Page Consistency


Functionality8
Functionality

  • Page-to-Page Consistency

    • Navigation Areas/Regions Shouldn’t Change Location Throughout the Site

    • Main Navigation Options Should Remain In the Same Order

    • Navigation Look and Feel Should Remain the Same Throughout the Site


Functionality9
Functionality

  • It’s all about the Navigation

    • Grouping Navigational Elements

    • Simple Naming Schemes

    • Clear/Easy-to-Understand Labeling

    • Page-to-Page Consistency


Design
Design

  • Is the Site Aesthetically Pleasing?

    • A Well-Built Home Page


Design1
Design

  • Effective Homepages Should Include:

    • Clear Logo/Titling in Header

    • Most Important Navigational Element In Top Left-Hand Region

    • Relevant Imagery

    • Bottom Line: You should be able to look at the home page of any site and figure out what the site is about within four seconds. If you can't, your site has failed.


Design2
Design

  • Is the Site Aesthetically Pleasing?

    • A Well-Built Home Page

    • Too Much Material On One Page


Design3
Design

  • Enhance Page Content by Providing Clear Links, Headings, Short Phrases, Short Paragraphs, and Bulleted Lists

  • Users Tend to Scan, Stopping Only When They Find Something Interesting


Design4
Design

  • Is the Site Aesthetically Pleasing?

    • A Well-Built Home Page

    • Too Much Material On One Page

    • Crazy Fonts


Design5
Design

  • Use at Least a 10-point Font to Achieve The Best Possible Reading Performance

  • Fonts Smaller Than 10-Point Elicited Slower Performance From Users

  • The Older The Targeted Audience, The Larger The Point Size (12-14 Point)


Design6
Design

  • Use Fonts That:

  • Fit the Character of Your Site,

  • Are Easy to Read On a Computer Screen, and

  • Are Widely Available


Design7
Design

  • Is the Site Aesthetically Pleasing?

    • A Well-Built Home Page

    • Too Much Material On One Page

    • Crazy Fonts


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