Number fetishism leads usability studies astray by focusing on statistical analyses that are often false, biased, misleading, or overly narrow. Better to emphasize insights and qualitative research.| Nielsen Norman Group
Clickable interface elements with absent or weak visual signifiers condition users to click and hover uncertainly across pages — reducing efficiency.| Nielsen Norman Group
A skeleton screen is used as a placeholder while users wait for a page to load. This progress indicator is used for full page loads and reduces the perception of a long loading time by providing clues for how the page will ultimately look.| Nielsen Norman Group
All usability studies show that fast response times are essential for Web usability: let's believe the data for once! Advice for speeding up sites despite the fact that bandwidth is going down, not up.| Nielsen Norman Group
The interaction cost is the sum of efforts — mental and physical — that users must deploy in interacting with a site in order to reach their goals.| Nielsen Norman Group
Teens are (over)confident in their web abilities, but they perform worse than adults. Lower reading levels, impatience, and undeveloped research skills reduce teens' task success and require simpler sites.| Nielsen Norman Group
Despite many weaknesses, interviews are a valuable method for exploratory user research.| Nielsen Norman Group