9 THE PROCESS OF INTERACTION DESIGN

9 THE PROCESS OF INTERACTION DESIGN

1. Introduction

   • Design is a practical and creative activity with the aim of developing a product that helps its users achieve their goals
   • To explore how we can design and build interactive products

2. What Is Involved in Interaction Design?

   • The Importance of Involving Users
     • expectation management and ownership
   • Degrees of User Involvement
   • So design involves work on requirements, designing a solution, producing an interactive version of the solution, and evaluating it.
   • What Is a User-Centered Approach?
     • Early focus on users and tasks
     • Empirical measurement
     • Iterative design
   • Four Basic Activities of Interaction Design
     • Establishing Requirements
     • Designing Alternatives
     • Prototyping
     • Evaluating
   • A Simple Lifecycle Model for Interaction Design
   • But design is also about trade-offs, about balancing conflicting requirements.

3. Some Practical Issues

   • Who Are the Users?
     • Identifying the users may seem like a straightforward activity , but in fact there are many interpretations of the term ‘user,’ and involving the right users is crucial to successful user-centered design
   • What Do We Mean by ‘Needs’?
     • Focusing on people's goals and on usability and user experience goals is a more promising approach to interaction design than focusing on people's needs and expecting them to be able to tell us the requirements for a product
   • How Do You Generate Alternative Designs?
     • The field of case-based reasoning (Maher and Pu, 1997) emerged from the observation that designers solve new problems by drawing on knowledge gained from solving previous similar problems.
       • As Schank (1982, p. 22) puts it, “An expert is someone who gets reminded of just the right prior experience to help him in processing his current experiences.” And while those experiences may be the designer's own, they can equally well be others
   • How Do You Choose Among Alternative Designs?
   • How Do You Integrate Interaction Design Activities with Other Lifecycle Models?

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