New in the 5th Edition

To reflect the dynamic nature of the field, the fifth edition has been thoroughly updated, and new examples, images, case studies, dilemmas, and so on, have been included to illustrate the changes. Included in this edition is a new chapter called "Data at Scale." Collecting data has never been easier. However, knowing what to do with it when designing new user experiences is much more difficult. The chapter introduces key methods for collecting data at scale, discusses how to transform data at scale to be meaningful, and reviews a number of methods for visualizing and exploring data at scale while introducing fundamental design principles for making data at scale ethical. This is positioned just after two chapters that introduce data gathering and data analysis that discuss fundamental methods.

In this edition, the chapter on the Process of Interaction Design has been re-located to Chapter 2 in order to better frame the discussion of interaction design. It has been updated with new process models and modified to fit its new location in the book structure. This means that the other chapters have been renumbered to accommodate this and the new chapter.

Chapter 13, "Interaction Design in Practice," has been updated to reflect recent developments in the use of practical UX methods. Old examples and methods no longer used in the field have been removed to make way for the new material. Some chapters have been completely rewritten, while others have been extensively revised. For example, Chapters 4, 5, and 6 have been substantially updated to reflect new developments in social media and emotional interaction, while also covering the new interaction design issues they raise, such as privacy and addiction. Many examples of new interfaces and technologies have been added to Chapter 7. Chapter 8 and Chapter 9 on data gathering and analysis have also been substantially updated. New case studies and examples have been added to Chapters 14–16 to illustrate how evaluation methods have changed for use with the continuously evolving technology that is being developed for today's users. The interviews accompanying the chapters have been updated, and two new ones are included with leading figures involved in innovative research, state-of-the-art design, and contemporary practice.

We have decided to continue to provide both a print-based version of the book and an e-book. Both are in full color. The e-book supports note sharing, annotating, contextualized navigating, powerful search features, inserted videos, links, and quizzes.