document: Effectiveness of user testing and heuristic evaluation as a function of performance classification For different levels of user performance , different types of information are processed and users will make different types of errors . Based on the error 's immediate cause and the information being processed , usability problems can be classified into three categories . They are usability problems associated with skill-based , rule-based and knowledge-based levels of performance . In this paper , a user interface for a Web-based software program was evaluated with two usability evaluation methods , user testing and heuristic evaluation . The experiment discovered that the heuristic evaluation with human factor experts is more effective than user testing in identifying usability problems associated with skill-based and rule-based levels of performance . User testing is more effective than heuristic evaluation in finding usability problems associated with the knowledge-based level of performance . The practical application of this research is also discussed in the paper
doc_bio_tags: O O B I O B I O O O O B I O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O B O O O O O O O O O O O O O O O O O B I O O O O O O O O O B O O O B I O B I O O B O O O B I O O O O O O O O B I O O B O O O O O O O O O O B I O O O O B I O O B O O O O O O O O O O O O O O O O O O O O O