How quickly do people judge a website?
In the study, people were shown web pages for just 50 milliseconds and asked to rate how visually appealing they were. They were then shown them for longer — 500 milliseconds — but their opinions barely changed. They had already decided whether they liked what they saw in that first fraction of a second.
As the Nielsen Norman Group explains, that immediate reaction can then affect how people judge the rest of the website, including whether it seems easy to use and whether the business feels credible.
The halo effect
The term “halo effect” goes back to the psychologist Edward Thorndike’s original 1920 paper. He found that people’s overall impression of someone affected how they judged their individual qualities. Someone seen favourably in general was also more likely to be rated highly for things such as intelligence, leadership and character.
The same thing can happen when someone visits a website. That first impression may colour how they judge everything that follows — including whether the website seems easy to use and whether the business behind it feels credible.
A first impression is only the beginning
People do not make the whole decision in that first fraction of a second. They will still read the content, look for the information they need and decide whether the business is right for them. But they do all of that with an initial impression already in place.
If the website immediately feels confusing, dated or untrustworthy, everything that follows has to work harder to change that impression. If it feels clear and credible, visitors are more likely to give it their attention in the first place.
What does this mean for your business?
Before someone has read a word, the appearance of a website has already begun to tell them something about the business behind it. A bright pink design might make one business appear playful, but make another seem less serious. A cluttered website might give the impression that the business itself is disorganised.
Those assumptions may not be accurate, and they do not necessarily determine what the visitor will do. But once that first impression has formed, it can influence how they judge everything that follows — including the information, the usability of the website and the credibility of the business.
This is why the appearance of a website is not merely decoration. Every design decision contributes to the impression people form of the business — often before its words have had a chance to explain anything.
