Paper prototyping, card sorting, and traditional usability testing were all employed to guide the design of the 1995 Sun Microsystems' Web site.| Nielsen Norman Group
Progressive disclosure defers advanced or rarely used features to a secondary screen, making applications easier to learn and less error-prone.| Nielsen Norman Group
Better to accept a wider margin of error in usability metrics than to spend the entire budget learning too few things with extreme precision.| Nielsen Norman Group
Elaborate usability tests are a waste of resources. The best results come from testing no more than 5 users and running as many small tests as you can afford.| Nielsen Norman Group
The answer is 5, except when it's not. Most arguments for using more test participants are wrong, but some tests should be bigger and some smaller.| Nielsen Norman Group