Usability Testing Guide: What It Is, How to Run It, and When to Use Each Method

We all know that building a robust information architecture (IA) can make or break your product. And getting it right can rely on robust user research. Especially when it comes to creating human-centered, intuitive products that deliver outstanding user experiences.

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But what are the best methods to test your information architecture? To make sure that your focus is on building an information architecture that is truly based on what your users want, and need.

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What is user research? 🗣️🧑🏻💻

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With all the will in the world, your product (or website or mobile app) may work perfectly and be as intuitive as possible. But, if it is only built on information from your internal organizational perspective, it may not measure up in the eyes of your user. Often, organizations make major design decisions without fully considering their users. User research (UX) backs up decisions with data, helping to make sure that design decisions are strategic decisions. 

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Testing your information architecture can also help establish the structure for a better product from the ground up. And ultimately, the performance of your product. User experience research focuses your design on understanding your user expectations, behaviors, needs, and motivations. It is an essential part of creating, building, and maintaining great products. 

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Taking the time to understand your users through research can be incredibly rewarding with the insights and data-backed information that can alter your product for the better. But what are the key user research methods for your information architecture? Let’s take a look.

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Research methods for information architecture ⚒️

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There is more than one way to test your IA. And testing with one method is good, but with more than one is even better. And, of course, the more often you test, especially when there are major additions or changes, you can tweak and update your IA to improve and delight your user’s experience.

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Card Sorting 🃏

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Card sorting is a user research method that allows you to discover how users understand and categorize information. It’s particularly useful when you are starting the planning process of your information architecture or at any stage you notice issues or are making changes. Putting the power into your users’ hands and asking how they would intuitively sort the information. In a card sort, participants sort cards containing different items into labeled groups. You can use the results of a card sort to figure out how to group and label the information in a way that makes the most sense to your audience. 

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There are a number of techniques and methods that can be applied to a card sort. Take a look here if you’d like to know more.

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Card sorting has many applications. It’s as useful for figuring out how content should be grouped on a website or in an app as it is for figuring out how to arrange the items in a retail store.You can also run a card sort in person, using physical cards, or remotely with online tools such as OptimalSort.

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Tree Testing 🌲

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Taking a look at your information architecture from the other side can also be valuable. Tree testing is a usability method for evaluating the findability of topics on a product. Testing is done on a simplified text version of your site structure without the influence of navigation aids and visual design.

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Tree testing tells you how easily people can find information on your product and exactly where people get lost. Your users rely on your information architecture – how you label and organize your content – to get things done.

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Tree testing can answer questions like:

• Do my labels make sense to people?
• Is my content grouped logically to people?
• Can people find the information they want easily and quickly? If not, what’s stopping them?

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Treejack is our tree testing tool and is designed to make it easy to test your information architecture. Running a tree test isn’t actually that difficult, especially if you’re using the right tool. You’ll  learn how to set useful objectives, how to build your tree, write your tasks, recruit participants, and measure results.

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Combining information architecture research methods 🏗

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If you are wanting a fully rounded view of your information architecture, it can be useful to combine your research methods.

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Tree testing and card sorting, along with usability testing, can give you insights into your users and audience. How do they think? How do they find their way through your product? And how do they want to see things labeled, organized, and sorted? 

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If you want to get fully into the comparison of tree testing and card sorting, take a look at our article here, which compares the options and explains which is best and when. 

Having a library of user research books is invaluable. Whether you’re an old hand in the field of UX research or just dipping your toes in the water, being able to reference detailed information on methods, techniques and tools will make your life much easier.

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There’s really no shortage of user research/UX reading lists online, so we wanted to do something a little different. We’ve broken our list up into sections to make finding the right book for a particular topic as easy as possible.

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General user research guides

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These books cover everything you need to know about a number of UX/user research topics. They’re great to have on your desk to refer back to – we certainly have them on the bookshelf here at Optimal Workshop.

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Observing the User Experience: A Practitioner's Guide to User Research

Mike Kuniavsky

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This book covers 13 UX research techniques in a reference format. There’s a lot of detail, making it a useful resource for people new to the field and those who just need more clarification around a certain topic. There’s also a lot of practical information that you’ll find applicable in the real world. For example, information about how to work around research budgets and tight time constraints.

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• Goodreads link

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Just Enough Research

Erika Hall

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In Just Enough Research, author Erika Hall explains that user research is something everyone can and should do. She covers several research methods, as well as things like how to identify your biases and make use of your findings. Designers are also likely to find this one quite useful, as she clearly covers the relationship between research and design.

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• Goodreads link

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Research Methods in Human-Computer Interaction

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Harry Hochheiser, Jonathan Lazar, Jinjuan Heidi Feng

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Like Observing the User Experience, this is a dense guide – but it’s another essential one. Here, experts on human-computer interaction and usability explain different qualitative and quantitative research methods in an easily understandable format. There are also plenty of real examples to help frame your thinking around the usefulness of different research methods.

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• Goodreads link

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Information architecture

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If you’re new to information architecture (IA), understanding why it’s such an important concept is a great place to start. There’s plenty of information online, but there are also several well-regarded books that make great starting points.

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Information Architecture for the World Wide Web: Designing Large-Scale Web Sites

Peter Morville, Louis Rosenfeld

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You’ll probably hear this book referred to as “the polar bear book”, just because the cover features a polar bear. But beyond featuring a nice illustration of a bear, this book clearly covers the process of creating large websites that are both easy to navigate and appealing to use. It’s a useful book for designers, information architects and user researchers.

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• Goodreads link

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How to Make Sense of Any Mess

Abby Covert

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This is a great introduction to information architecture and serves as a nice counter to the polar bear book, being much shorter and more easily digestible. Author Abby Covert explains complex concepts in a way anyone can understand and also includes a set of lessons and exercises with each chapter.

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• Goodreads link

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User interviews

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For those new to the task, the prospect of interviewing users is always daunting. That makes having a useful guide that much more of a necessity!

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Interviewing Users: How to Uncover Compelling Insights

Steve Portigal

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While interviewing users may seem like something that doesn’t require a guide, an understanding of different interview techniques can go a long way. This book is essentially a practical guide to the art of interviewing users. Author Steve Portigal covers how to build rapport with your participants and the art of immersing yourself in how other people see the world – both key skills for interviewers!

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• Goodreads link

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Usability testing

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Web usability is basically the ease of use of a website. It’s a broad topic, but there are a number of useful books that explain why it’s important and outline some of the key principles.

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Don't Make Me Think: A Common Sense Approach to Web Usability

Steve Krug

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Don’t Make Me Think is the first introduction to the world of UX and usability for many people, and for good reason – it’s a concise introduction to the topics and is easy to digest. Steve Krug explains some of the key principles of intuitive navigation and information architecture clearly and without overly technical language. In the latest edition, he’s updated the book to include mobile usability considerations.

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As a testament to just how popular this book is, it was released in 2000 and has since had 2 editions and sold 400,000 copies.

• Goodreads link

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Design

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The design–research relationship is an important one, even if it’s often misunderstood. Thankfully, authors like Don Norman and Vijay Kumar are here to explain everything.

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The Design of Everyday Things

Don Norman

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This book, by cognitive scientist and usability engineer Don Norman, explains how design is the communication between an object and its user, and how to improve this communication as a way of improving the user experience. If nothing else, this book will force you to take another look at the design of everyday objects and assess whether or not they’re truly user-friendly.

• Goodreads link

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101 Design Methods: A Structured Approach for Driving Innovation in Your Organization

Vijay Kumar

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A guidebook for innovation in the context of product development, this book approaches the subject in a slightly different way to many other books on the same subject. The focus here is that the practice of creating new products is actually a science – not an art. Vijay Kumar outlines practical methods and useful tools that researchers and designers can use to drive innovation, making this book useful for anyone involved in product development.

• Goodreads link

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See our list on Goodreads

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We've put together a list of all of the above books on Goodreads, which you can access here.

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Further reading

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For experienced practitioners and newcomers alike, user research can often seem like a minefield to navigate. It can be tricky to figure out which method to use when, whether you bring a stakeholder into your usability test (you should) and how much you should pay participants. Take a look at some of the other articles on our blog if you’d like to learn more.

Many organizations are aware that staying relevant essential for their success. This can mean a lot of things to different organizations. What it often means is coming up with plenty of new, innovative ideas and products to keep pace with the demands and needs of the marketplace. It also means keeping up with the expectations and needs of your users, which often means  shorter and shorter product development life cycle times.  While maintaining this pace can be daunting, it can also be seen as a strength, tightening up your processes and cutting out unnecessary steps.

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A vital part of developing new (or tweaking existing) products is considering the end user first. There really is no point in creating anything new if it isn’t meeting a need or filling a gap in the market. How can you make sure you are hitting the right mark? Ask your users.  We look into some of the key user research methods available to help you in your product development process.

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If you want to know more about how to fit research into your product development process, take a read here.

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What is user research? 👨🏻💻

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User experience (UX) research, or user research as it’s commonly referred to, is an important part of the product development process. Primarily, UX research involves using different research methods to gather qualitative and quantitative data and insights about how your users interact with your product. It is an essential part of developing, building, and launching a product that truly meets the needs, desires, and requirements of your users. 

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At its simplest, user research is talking to your users and understanding what they want and why. And using this to deliver what they need.

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How does user research fit into the product development process? 🧩🧩

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User research is an essential part of the product development process. By asking questions of your users about how your product works and what place it fills in the market, you can create a product that delivers what the market needs to those who need it. 

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Without user research, you could literally be firing arrows in the dark, or at the very best, working from a very internal organizational view based on assuming that what you believe users need is what they want. With user research, you can collect qualitative and quantitative data that clearly tells you where and what users would like to see and how they would use it.

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Investing in user research right at the start of the product development process can save the team and the organization heavy investment in time and money. With detailed data responses, your brand-new product can leapfrog many development hurdles, delivering a final product that users love and want to keep using. Firing arrows to hit a bullseye.

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What user research methods should we use? 🥺

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Qualitative ResearchMethods

Qualitative research is about exploration. It focuses on discovering things we cannot measure with numbers and typically involves getting to know users directly through interviews or observation.

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Usability Testing – Observational

One of the best ways to learn about your users and how they interact with your new product is to observe them in their own environment. Watch how they accomplish tasks, the order they do things, what frustrates them, and what makes the task easier and/or more enjoyable for your subject. The data can be collated to inform the usability of your product, improving intuitive design and what resonates with your users.

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Competitive Analysis

Reviewing products already on the market can be a great start to the product development process. Why are your competitors’ products successful? And how well do they behave for users? Learn from their successes, and even better, build on where they may not be performing as well and find where your product fills the gap in the market.

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Quantitative Research Methods

Quantitative research is about measurement. It focuses on gathering data and then turning this data into usable statistics.

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Surveys

Surveys are a popular user research method for gathering information from a wide range of people. In most cases, a survey will feature a set of questions designed to assess someone’s thoughts on a particular aspect of your new product. They’re useful for getting feedback or understanding attitudes, and you can use the learnings from your survey of a subset of users to draw conclusions about a larger population of users.

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Wrap Up 🌯

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Gathering information on your users during the product development process and before you invest time and money can be hugely beneficial to the entire process. Collating robust data and insights to guide the new product development and respond directly to user needs, and filling that all-important niche. Undertaking user experience research shouldn’t stop at product development but throughout each and every step of your product life cycle. If you want to find out more about UX research throughout the life cycle of your product, take a read of our article UX research for each product phase.