Who More evaluators will find more errors. How Evaluators review interface individually and report problems to coordinator. Alternatively, evaluators can review interface as a group, while coordinator records problems. Evaluators do not have to agree on a problem - all should be recorded. Coordinator combines problems and removes duplicates.
Evaluators review combined list individually and assign severity ratings.
Coordinator averages ratings and ranks problems by severity. Designer looks for patterns and find solutions For example, if lots of the problems are consistency-related, work out a consistency guideline, then fix the problems according to the guideline. The system should always keep users informed about what is going on, through appropriate feedback within reasonable time. The system should speak the users' language, with words, phrases and concepts familiar to the user, rather than system-oriented terms. Follow real-world conventions, making information appear in a natural and logical order.