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Chapter 1 Introducing User Interface Design

Chapter 1 Introducing User Interface Design. Why the User Interface Matters Computers Are Ubiquitous The Importance of Good User Interface Design What Is a Good User Interface Design? What Is Usability?. Usability : (ISO 9241)

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Chapter 1 Introducing User Interface Design

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  1. Chapter 1IntroducingUser Interface Design

  2. Why the User Interface Matters • Computers Are Ubiquitous • The Importance of Good User Interface Design • What Is a Good User Interface Design? • What Is Usability? UIDE Chapter 1

  3. Usability: (ISO 9241) “the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use.” Effectiveness: “the accuracy and completeness with which users can achieve goals in particular environments” Efficiency: “the resources expended in relation to the accuracy and completeness of the goals achieved” Satisfaction” “the comfort and acceptability of the work system to its users and other people affected by its use” UIDE Chapter 1

  4. The Problems of Poor or Bad User Interfaces • User Frustration and Dissatisfaction • This is Broken, Ask Tog, • Safety and the User Interface • Elections and the User Interface • Butterfly Ballot • Small Irritations Are Also a Problem UIDE Chapter 1

  5. Links: Man Shoots Computer Computer Rage Computer Rage-2 Wikipedia Definition Cartoon UIDE Chapter 1

  6. Designing for Users • Human-Centered Design (HCD) Principles • Active involvement of users • Allocation of function between user and system • Iteration of design solutions • Multidisciplinary design teams UIDE Chapter 1

  7. Designing for Users • 4 Essential HCD Activities • Understand and specify the context of use • Specify the user and organizational requirements • Produce design solutions (prototypes) • Evaluate designs with users against requirements UIDE Chapter 1

  8. Designing for Users • User-Centered Design • The Classic Life Cycle • Involving Users • Who Are the Users? • Making the Design Process Iterative • When and How to Involve Users UIDE Chapter 1

  9. The Classic Life Cycle for Software Development UIDE Chapter 1

  10. Interface Design and Evaluation Process UIDE Chapter 1

  11. Stakeholders –vs- Users • Stakeholders • Payers, administration, developers, endusers • Users • Users of the computer system UIDE Chapter 1

  12. Star Life Cycle • Evaluation-centered UIDE Chapter 1

  13. The Two Types of Knowledge Needed for UI Design • Information-gathering and analyses that form part of the user interface design and development process • User interface design knowledge (i.e. design principles, design rules) UIDE Chapter 1

  14. Evaluation • When and How Do You Evaluate? • Evaluation Early in the Life Cycle • Evaluation Later in the Life Cycle • How Do You Evaluate? • Observing the organization and how people work • Interviewing, talking, and asking questions • Making predictions UIDE Chapter 1

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