Usability Testing

Your constantly-updated definition of Usability Testing and collection of topical content and literature

What is Usability Testing?

Usability testing is the practice of testing how easy a design is to use on a group of representative users. It usually involves observing users as they attempt to complete tasks and can be done for different types of designs, from user interfaces to physical products. It is often conducted repeatedly, from early development until a product’s release.


The main benefit and purpose of usability testing is to identify usability problems with a design as early as possible, so they can be fixed before the design is implemented or mass produced. As such, usability testing is often conducted on prototypes rather than finished products, with different levels of fidelity (i.e., detail and finish) depending on the development phase. Prototypes tend to be more primitive, low-fidelity versions (e.g., paper sketches) during early development, and then take the form of more detailed, high-fidelity versions (e.g., interactive digital mock-ups) closer to release.

In a typical usability test, a test moderator gives test participants a series of tasks that they must perform with the design. The tasks represent actions that an end user would typically carry out with the finished product. During the test, the moderator observes each participant’s actions, often also recording the test session on video. After analyzing the results of a usability test, the moderator reports on several points of interest that arose—these include issues such as the aspects of the design that caused problems and the severity of these problems, as well as places in the design that the participants particularly liked. Recognizing this potential to highlight difficulties and strong points in a design’s early versions is a vital part of a designer’s thought process. The broader the testing and the greater the number of matters raised, the stronger the likelihood that designers can craft more successful products.

Literature on Usability Testing

Here’s the entire UX literature on Usability Testing by the Interaction Design Foundation, collated in one place:

Learn more about Usability Testing

Take a deep dive into Usability Testing with our course Conducting Usability Testing .

Do you know if your website or app is being used effectively? Are your users completely satisfied with the experience? What is the key feature that makes them come back? In this course, you will learn how to answer such questions—and with confidence too—as we teach you how to justify your answers with solid evidence.

Great usability is one of the key factors to keep your users engaged and satisfied with your website or app. It is crucial you continually undertake usability testing and perceive it as a core part of your development process if you want to prevent abandonment and dissatisfaction. This is especially important when 79% of users will abandon a website if the usability is poor, according to Google! As a designer, you also have another vital duty—you need to take the time to step back, place the user at the center of the development process and evaluate any underlying assumptions. It’s not the easiest thing to achieve, particularly when you’re in a product bubble, and that makes usability testing even more important. You need to ensure your users aren’t left behind!

As with most things in life, the best way to become good at usability testing is to practice! That’s why this course contains not only lessons built on evidence-based approaches, but also a practical project. This will give you the opportunity to apply what you’ve learned from internationally respected Senior Usability practitioner, Frank Spillers, and carry out your own usability tests.

By the end of the course, you’ll have hands-on experience with all stages of a usability test project—how to plan, run, analyze and report on usability tests. You can even use the work you create during the practical project to form a case study for your portfolio, to showcase your usability test skills and experience to future employers!

All Literature

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