"Hamburger" menus have some usability problems in mobile designs and many problems on desktop. A bold new design solves these flaws.| 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
Across many tasks, learning curves show an initial learning period, followed by a plateau of optimal efficiency.| Nielsen Norman Group