Heuristic Evaluation of Websites: How> Step2







				The more evaluators you use, the more usability problems you'll reveal. However, studies on the subject have shown that the benefit/cost ratio decreases at about five evaluators. So who should these evaluators be? Those with experience - if you can find 5 evaluators who are experts in software ergonomics, and in the field in which the software is applied, a well-planned evaluation program will typically find 81%-90% of usability problems with your interface Those without experience - if you don't have 5 free experts at your fingertips, don't worry. A student with no knowledge of software ergonomics will find 22% to 29% of usability problems. Heuristic Evaluation is known to find more than 90% of usability problems if it's performed by 3 to 5 experienced people... but remember, one evaluator is better than none! Next: Review Heuristics >






















				Top Last updated February 17th 2002