COVID-19 Update: We are currently shipping orders daily. However, due to transit disruptions in some geographies, deliveries may be delayed. To provide all customers with timely access to content, we are offering 50% off Science and Technology Print & eBook bundle options. Terms & conditions.
Moderating Usability Tests - 1st Edition - ISBN: 9780123739339, 9780080558271

Moderating Usability Tests

1st Edition

Principles and Practices for Interacting

Authors: Joseph Dumas Beth Loring
Paperback ISBN: 9780123739339
eBook ISBN: 9780080558271
Imprint: Morgan Kaufmann
Published Date: 29th February 2008
Page Count: 208
Sales tax will be calculated at check-out Price includes VAT/GST
Price includes VAT/GST

Institutional Subscription

Secure Checkout

Personal information is secured with SSL technology.

Free Shipping

Free global shipping
No minimum order.

Table of Contents

CHAPTER 1 Introduction
1.1 Why This Book?
1.2 What Is Usability Testing?
1.3 The Importance of Moderating Skills
1.4 The Golden Rules of Moderating
1.5 Cultural Points of View
1.6 About the Sidebars in This Book
1.7 About the Videos that Accompany This Book
1.8 About the Companion Web Site

CHAPTER 2 Getting started as a test moderator
2.1 What Makes a Great Moderator?
2.2 Roles of a Moderator
2.3 Testing Locations
2.4 Test Preparation
2.5 Jump-Starting Your Moderating Skills

CHAPTER 3 Golden rules 1 through 5
3.1 Rule 1: Decide How to Interact Based on the Purpose of the Test
3.2 Rule 2: Protect Participants’ Rights
3.3 Rule 3: Remember Your Responsibility to Future Users
3.4 Rule 4: Respect the Participants as Experts, but Remain
3.5 Rule 5: Be Professional, Which Includes Being Genuine

CHAPTER 4 Golden rules 6 through 10
4.1 Rule 6: Let the Participants Speak!
4.2 Rule 7: Remember That Your Intuition Can Hurt and Help You
4.3 Rule 8: Be Unbiased
4.4 Rule 9: Don’t Give Away Information Inadvertently
4.5 Rule 10: Watch Yourself to Keep Sharp

CHAPTER 5 Initial contacts
5.1 Recruiting
5.2 When Participants Arrive
5.3 The Pretest Briefing
5.4 Transitioning to the Tasks

CHAPTER 6 Interacting during the session
6.1 Interacting for a Reason
6.2 Keeping Them Talking
6.3 When and How to Probe
6.4 Providing Encouragement
6.5 Dealing with Failure
6.6 Providing Assistance

CHAPTER 7 Interacting during post-test activities
7.1 Maintaining Your Roles
7.2 Determining the Order of Activities
7.3 Clarifying Things That Occurred during the Test
7.4 Administering Ratings and Questionnaires
7.5 Asking Open-Ended Questions
7.6 Allowing Others to Interact with Participants
7.7 Final Activities

CHAPTER 8 Interacting in a remote test session
8.1 What Is Remote Testing?
8.2 Preparing for the Session
8.3 Interacting during the Session

CHAPTER 9 Moderator–participant arrangements
9.1 A Bit of History
9.2 Physical Arrangement
9.3 Beliefs about Arrangements
9.4 Choice of Arrangement
9.5 Considerations for the Practitioner

CHAPTER 10 Interacting with diverse populations
10.1 General Guidelines
10.2 People with Physical Disabilities
10.3 The Elderly
10.4 People Who Have Low Literacy Skills
10.5 Children and Teens
10.6 People From Other Cultures

CHAPTER 11 Integrating the videos
11.1 About the Videos
11.2 Content of the Videos
11.3 The Future of Usability Testing


Moderating Usability Tests provides insight and guidance for usability testing. To a large extent, successful usability testing depends on the skills of the person facilitating the test. However, most usability specialists still learn how to conduct tests through an apprentice system with little formal training.

This book is the resource for new and experienced moderators to learn about the rules and practices for interacting. Authors Dumas and Loring draw on their combined 40 years of usability testing experience to develop and present the most effective principles and practices – both practical and ethical – for moderating successful usability tests. The videos are available from the publisher's companion web site.

Key Features

  • Presents the ten “golden rules” that maximize every session’s value
  • Offers targeted advice on how to maintain objectivity
  • Discusses the ethical considerations that apply in all usability testing
  • Explains how to reduce the stress that participants often feel
  • Considers the special requirements of remote usability testing
  • Demonstrates good and bad moderating techniques with laboratory videos accessible from the publisher’s companion web site


Usability professionals and software and web design professionals who run usability studies and do user testing, including human factors engineers, usability practitioners/engineers, technical communication professionals, interaction designers, software developers, quality assurance people, and anyone else who needs to do this work.


No. of pages:
© Morgan Kaufmann 2008
29th February 2008
Morgan Kaufmann
Paperback ISBN:
eBook ISBN:


Joe and Beth really know their stuff, and they’ve put together a book that’s enormously valuable for usability professionals and usability amateurs. Whether you’ve conducted hundreds of tests or are about to try your first one, you owe it to yourself--and your team...and your test participants--to read this. - Steve Krug, author of Don’t Make Me Think

Interacting with participants in a calm and neutral manner may well be the most difficult part of doing usability testing. Now you no longer have to worry about how to do that. Just follow Dumas and Loring's wonderful, practical advice and you will be prepared not only for typical encounters, but also for the unusual and unexpected, for doing remote testing, and for working with special populations. Moderating Usability Tests is a great resource for anyone who interacts with usability test participants. - Janice (Ginny) Redish, President, Redish & Associates, Inc.

Everyone talks about research methods, but the formal aspects of those methods only get you so far. The difference between getting a little data or a lot of data, only discovering problems or getting ideas about solutions, bias or validity, throw-away data versus generalizable insights, often depend on the soft skills, the ability to effectively moderate testing. In the past, you were expected to get these skills through apprenticeships or trial and error. Moderating Usability Tests: Principles for Interacting with Participants removes the mystery and provides practical advice on how to get the most out of research. It will be invaluable to students learning about usability testing for the first time, people newly charged with evaluating products, and even old hands looking to refine and improve their technique. - Arnold Lund, Director of User Experience, Microsoft

You may not think that being a “Gracious Host” is among your assignments in moderating a usability test, but you will learn why this and other roles with similarly illuminating names are important to your success. In this generous book, Dumas and Loring give the benefit of their decades of experience and astute observation of both the foundational and the subtle aspects of conducting usability tests. Many questions you didn't think to ask until you were on the hot seat are answered here, and will help you achieve a level of confidence as a test moderator that may have seemed beyond reach, even if your participants are from challenging-to-test populations. With this highly ethical and thoroughly grounded program for developing moderator skills and avoiding pitfalls, Dumas and Loring make a strong contribution to the body of knowledge on testing products. The big surprise of the book is that their clear, reasoned, and detailed suggestions about interacting with test participants and developers will likely spill over and improve your relationships with co-workers, family, neighbors, and friends. - Elisabeth Bayle, Bayle Collaborations

At this point, virtually everyone in the software industry knows what usability testing is. An unfortunate side effect of this awareness is that many people are conducting usability testing who have no idea how to do so in a way that will yield valid, reliable and useful data. Other than the design of the test itself, proper and effective moderation of test sessions is one of the most important - and least understood - aspects of usability testing. Here is a book by two highly regarded experts that covers this topic thoroughly in a very readable format. No one who has not already been well trained should attempt to conduct usability testing without first reading this book cover to cover, and viewing all the excellent videos the authors provide. - Deborah J. Mayhew, Deborah J. Mayhew & Associates

Ratings and Reviews

About the Authors

Joseph Dumas

Joe Dumas is a recognized expert in usability evaluation. He has 25 years experience as a usability professional. He as moderated or observed others moderate thousands of usability testing sessions and taught numerous students and usability professionals how to moderate. He is the author of A practical guide to usability testing (with Ginny Redish), Designing user interfaces for software, and numerous articles, both for researchers and practitioners. He is currently a Usability Consultant for Oracle Corporation. He was a Senior Human Factors Specialist at Bentley College’s Design and Usability Center and taught graduate courses in the college’s Human Factors in Information Design Master’s Degree program. He has a Ph.D. in Cognitive Psychology.

Affiliations and Expertise

User Experience Consultant

Beth Loring