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Usability Testing – What, Why, When, Who, and How

Last Updated: March 6, 2020 No Comments – 6 min. read

man holding phone

This post originally appeared on The Brandon Agency‘s blog here.

Usability testing is, as the name suggests, an attempt to evaluate a product’s usability, or ease of use, by seeing if its design fits the user’s natural expectations in an efficient, effective and satisfying manner. The user’s comments and “feelings” about the overall experience of using a particular product validate and dictate its design. This could be a teapot or a saltshaker, of course, but in digital marketing, we’re usually talking about a website or mobile application. It’s critical that the website or mobile app appeals to a person’s natural inclinations of how to use it. Usability testing ensures that this is accomplished, and it’s easier than you think.

Why Is Usability Testing Done?

Again, usability testing, also referred to as simply user testing, is the process by which the intuitiveness of a design is assessed. Any successful company will routinely test usability during production to make sure a design is used the way it’s intended. For a website, we’re referring to navigation menus, layout, button placement, features, verbiage and more.

People expect a great user experience (abbreviated UX) from websites and mobile apps. We call this user-friendly or human-centered design. Things like confusing navigation, broken links, unclear instructions and obstruction of information are the opposite of user-friendliness and can sometimes all but guarantee that a visitor will exit your website out of frustration, never to return. Moreover, that person may complain to their friends or post on social media about how Company X’s website was simply “unusable.” The converse is also true. Provide an excellent experience for the user, and they will buy your product, return in the future and sing your praises to their friends. Usability testing helps prevent the former and ensure the latter. The famous $300 million button is a great example of this. In short, usability = conversions = profit.

Additional, oft-overlooked benefits of usability testing include improved efficiency (e.g. more user-friendly internal systems help employees work faster and smarter), reduced development costs (since you’ll only have to focus on the important features and you can fix flaws early in the process without wasting time later) and reduced support costs (less time answering users’ questions, fewer returns, etc.).

When Is Usability Testing Done?

It’s a common misconception that once you do one round of usability testing, you can stop, or that a “best practices” approach obviates the need for testing. Wrong! ABT: Always Be Testing! Usability testing should be performed on a regular schedule, especially during different phases of development. Design trends come and go, and users’ expectations evolve with these trends, so this is not a set-and-forget process. Similarly, there is no one-size-fits-all user-friendly design. What works for Facebook may not – and likely will not – work for you.

Who Conducts Usability Testing? And Who Are the Users?

Ideally, you’d want someone with some UX experience facilitating the test, but if you don’t have one of those, anyone can conduct a usability test – it’s easy! All you need is the product (we’ll continue with a website as an example), a video recorder (screen recording software for a website), a microphone and a list of tasks. Thus, designers, developers, project managers and CEOs can all conduct usability tests.

Testing can be a completely internal process, where in-house employees do the testing, or you can hire users to come in and perform testing. There are also websites that offer remote, unmoderated testing, but I’ll talk about those more later.

How Do I Do It?

  1. Identify users – It helps to have users similar to the real users of the product, but this is not absolutely necessary. Most human brains are similar in terms of performing tasks. Also, you only need five users.

  2. Design tasks – Think of specific actions you want to test. These are referred to as “tasks.” An entire blog post could be dedicated to this concept alone, since writing tasks is probably the most important aspect of your study. I like to preface my tasks with specific scenarios to set the scene, making it feel more real for the user and emulating a true circumstance. For example, for the Fish Hippie website, I had users imagine they were shopping for a shirt to keep them cool in the summer heat, because we wanted to see if people were easily able to find the new line of performance shirts. One user commented, “That’s fitting, since it is really hot outside right now, so I would probably look for that anyway.” Tasks should be specific enough to eliminate any possible ambiguity, yet general enough to allow the natural journey to unfold, which of course is the entire point of usability testing. Avoid being suggestive or asking “leading questions” in your tasks. This introduces bias and defeats the purpose of being able to see how a user naturally solves the problem. The task sequence regarding the shirt example above looked like this:
    • With the summer heat rising, you want to find a shirt that will keep you cool. Shop to find a shirt you like that will keep you cool.
    • Is it available in your desired color and size?
    • What were the important factors in choosing which shirt to get?

  3. Do the testing – Gather your materials, set up your testing location in a private room, get snacks, and invite observers – especially managers and executives – to watch live testing sessions. In my experience, they usually walk away fascinated at the issues found by having one person attempt to use their product, since it’s never as smooth as they expect.

  4. Analyze the results – The results of the tests should be analyzed and summarized to present the information on users’ comments and the problems they encountered. I usually use a simple bulleted list for this. If you have many issues that need fixing, you may want to rank them by priority.

A Word on Websites That Offer Remote, Unmoderated User Testing…

If you need a quick and dirty usability test, something like UserTesting.com – a website where you provide tasks and pay to get a video back from a tester completing them – is probably fine. But for any other case, I much prefer in-person testing. Here’s why:

Body language

For web-based services, you’re usually not going to be able to see the tester’s face, thus you can’t see facial expressions such as a “surprised” reaction when the user suddenly encounters something unexpected. This happens often, which leads to my next point.

Probing questions

Perhaps the most important reason why in-person testing is better is the ability to talk to the user. You’re able to ask probing questions, which usually give you more significant insights than the user’s unsolicited flow of thoughts. For example, if a user is surprised, you can ask, “Was there something that happened that you didn’t expect there?” – which is usually followed by an answer like, “Yea! I thought when I clicked this button, X would happen, but Y happened instead!” Moreover, remote users may sit in silence while scrolling and hovering, forgetting to constantly think out loud, which is very common. In-person testing allows you to ensure there is a constant stream of thought and say things like:

What are you thinking now?
What made you do that?
What are you looking at?
What are you doing now?

Q&A

In-person testing allows for questions and answers from both parties. I’ve also found that simply being in the same room and periodically saying “OK” and “That’s very helpful” cause the user to think out loud much more than they otherwise might in an unmoderated environment sitting at home.

Observers

As I said above, observing a live testing session can be a very rewarding and eye-opening experience for someone who is unfamiliar with the process and who naively assumes the product will definitely work the way it’s intended. Remote, unmoderated testing doesn’t allow for observation.

Time

Testers for sites like UserTesting.com have an incentive to spend as little time as possible doing a test. This causes them to not care as much and simply fly through the process. I should know – I used to be one! Thus, tests from these sites are usually only about 15 minutes long. Furthermore, it can be argued that these users eventually become “expert testers” after doing it so much, which affects the authenticity of your data. Real consumers will not be expert testers.

Deeper data

Because of the aforementioned aspects, you’re able to gain more meaningful insights from in-person usability testing, such as the psychological motivation behind specific behaviors, instead of the strict interaction with the product in isolation. I believe by solely using remote, unmoderated testing, you’re limiting yourself to discovering only “top-level” issues.

In summary, usability testing is extremely important; it directly fuels profits. It should be done on a regular basis, can be done by anyone, and is relatively easy to do. Opt for in-person, facilitated testing over remote, unmoderated testing for better testing, more meaningful insights, and more impactful results.

This post originally appeared on The Brandon Agency‘s blog here.

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About John Williamson

Analytical and entrepreneurial-minded data nerd, usability enthusiast, armchair research scientist, health/nutrition/supplement aficionado, and Oxford comma advocate. I lead the Paid Search marketing efforts at Gild Group. I'm not a big fan of social media, but you can find me on LinkedIn and Reddit.

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