Nielsen Norman GroupEvidence-Based User Experience Research, Training, and Consulting
Repetitive actions on websites often work well, but when users try something new, they frequently fail.
Users generally prefer designs that are fast and easy to use, but satisfaction isn't 100% correlated with objective usability metrics.
Users don't see stuff that's right on the screen. Selective attention makes people overlook things outside their focus of interest.
Users increasingly rely on individual pages listed by search engines instead of finding better ways to tackle problems.
Students are multitaskers who move through websites rapidly, often missing the item they come to find. They're enraptured by social media but reserve it for private conversations and thus visit company sites from search engines.