CHIEA '16 Proceedings of the 2016 CHI Conference Extended Abstracts on Human Factors in Computing Systems - Proceeding. May 7 – 12 at San Jose, CA, USA.
Usability evaluation methods rely, either explicitly or implicitly, on a definition of a usability problem to specify an evaluation scope and a usability problem report format. However, the majority of definitions are vague or fail to capture all relevant phenomena in the scope of human-computer interaction. This paper proposes the elaborate definition of a usability problem to address theoretical issues and guide a problem analysis strategy for various evaluation methods.