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Defining usability problems

P. 3144-3151.
Manakhov P., Ivanov V.

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.