Research: Usability Testing

How many times has this happened to you? You’ve finished presenting the results of your usability testing, heuristic evaluation, or other user research activity, feeling great about the positive impact your recommendations will have on a product’s user experience. The audience smiled and nodded along during your presentation. Most of them agree with your findings and seem genuinely impressed by the work you’ve done. But, later on, you face the reality that few of your recommendations have gotten implemented fully—and many, not at all.

Why don’t usability problems get fixed? If we point out obvious usability problems and provide reasonable solutions for them, why doesn’t someone fix them? In this column, I’ll explore these questions and provide some tips to help ensure your recommendations get implemented. Read More

Young children communicate well visually. When they want to articulate something for which they simply don’t have words, they point to objects in their environment. When they want more food and their plate is empty, they point to their empty plate or slam their plate down onto the table to signal hunger. They are prompting their parents to visualize what they are asking for. Their parents see the empty plate and know they’ve just finished eating their food. Their child must be asking for more food.

Visuals are effective ways in which to communicate. Sometimes sketching is the fastest way to convey a need or ask a question. According to education professor John Hattie and cognitive psychologist Gregory Yates, people are not all just better visual learners or auditory learners. Lab studies show that people learn best when the stimuli they receive are from different types of media. Our brains are wired to integrate information in different modalities. When we want people to understand something that we are explaining to them, we can reinforce our meaning not just through words, but also through pictures and sounds. Read More

One of the principles underlying usability testing is that observing a user perform a task provides more reliable information than simply asking the user how easy it would be to perform the task. By observing users, you can assess whether they are actually able to use a product. By asking them, you simply cannot.

• misleading—because often user behaviors that you observe can have many different interpretations. For example, if a user did not click a link, perhaps the user did not see the link or did not understand it. You cannot know the reason with certainty without asking the user. Your assumptions might be biased.
• limiting—because you lose the opportunity to gather valuable verbal data by relying only on observational data.

While some usability professionals might claim that you cannot rely on what users say—and there are some risks in relying on users’ comments—there are means of avoiding or minimizing those risks. To understand these means, we must leave the realm of objective science and enter the realm of human relationships and empathy. Read More