Nielsen Norman GroupEvidence-Based User Experience Research, Training, and Consulting
The user's target was at the top of the page in 98-point font. But she failed to find it because the panel auto-rotated instead of staying still.
Decent computer screens with pixel densities of 220 PPI or more lead to new usability guidelines for on-screen typography.
Websites and mobile apps both frequently cram options into too-small parts of the screen, making items harder to understand.
Web users spend 69% of their time viewing the left half of the page and 30% viewing the right half. A conventional layout is thus more likely to make sites profitable.
Users overlook features if the GUI elements (such as buttons and checkboxes) are too far away from the objects they act on.