Does Usability Research Measure Reality?
Usability research is essential for checking whether a site or app is intuitive and easy to navigate to create a great customer experience. It helps inform our decisions about the choice architecture. Remote usability research solutions or face-to-face user interviews identify the main usability problems. Do these methods of research reflect real behaviour?
How many usability research proposals acknowledge that the process of undertaking usability research can influence the behaviour we observe? We may have taken users out their natural environment and set them objectives that lead them to behave in a certain way.
Behavioural scientists have found that many of our decisions are made automatically by our unconscious brain. The context and our underlying psychological goals heavily influence the choices we make. We also behave differently when we are aware that we are being observed.
Asking respondents direct questions is especially problematic as people over-think issues. They switch to their slow, rational brain when encountering a mentally demanding task. Unfortunately most of the time when we are browsing a website we rely on our fast, intuitive, unconscious brain to make decisions without really engaging our conscious thought process. The implication here is that we cannot even access the rationale behind much of our behaviour when interacting with a website.
Daniel Kahneman, Thinking, fast and slow
“People don’t have reliable insight into their mental processes, so there is no point asking them what they want”.
Context is important:
Avoid taking people away from their natural environment if at all possible. Certainly don’t use focus groups as this is about far away of a normal browsing behaviour as you can get. How often do you search the web with a group of people you have never met and discuss your likes and dislikes of the site?
This is why remote user testing methods have an advantage over some face-to-face methods. Participants can be in their normal environment, with their normal distractions and so their behaviour is less likely to be influenced by the testing process. Don’t get me wrong, there will still be some bias as a result of the testing method. But it may be substantially less than techniques which take the user out of their normal browsing environment.
Observe and listen rather than ask:
You will get more meaningful insights from simply observing and listening to your users during a usability test as past behaviour is a more reliable indicator of future behaviour. Try to avoid verbal interventions as much as possible. People don’t like to admit when they do something wrong and you are likely to influence how they then behave in any future tasks. If you do want some verbal feedback, just ask your testers to say what they are doing as they go through the task.
But always keep in the back of your mind that usability testing is about informing your judgement, and not to prove or disprove someone’s opinions. It is also an iterative process that should begin early on in the development of a design.
Implicit Research Methods:
Most of our daily choices are made by our fast, intuitive brain which means we don’t have time to rationalise why we are making those decisions. New implicit research techniques such as functional MRI, EEG, biometrics, eye tracking, facial decoding and implicit reaction time studies (IRTs) are allowing marketers to access the sub-conscious part of the brain to better understand how we respond to communications and designs.
Eye tracking research helps identify which specific elements of a page or message attract our attention, but also the communication hierarchy of messages. Heatmaps allows us to display this data to reveal the proportion of visitors who noticed each of the key elements on a page. Plus the frequency and duration of gaze on each element.
Click and mouse movement heatmaps from visual analytics solutions such as Hotjar and Decibel Insights can provide similar insights for existing pages. For true eye tracking research though solutions from Affectiva and Sticky allow for you to evaluate both new and existing web page designs.
Source: Click Tale:
A/B Test Usability Testing Results:
In the final analysis the only way you will know if a change identified through usability research improved agreed success metrics is to conduct an online experiment in the form a A/B test. It is only when visitors are acting on their own impulses and with their own money that you will see how they behave.
Prioritise the insights you get from usability testing to decide which are worthy of A/B testing. A/B testing will give you the evidence to show exactly how much difference your usability testing has had on your conversion success metrics.