Comparison of Questionnaire Based and User Model Based Usability Evaluation Methods

The usability now serves as a fundamental quality of a computational device, e.g. smartphone. Moreover, the smartphone has firmly embedded into our daily life as an indispensable part, so the context and style that user may interact with them are largely different from a decade ago. Nowadays, testing usability with end user has become a...

Mood expression by seniors in digital communication: Evaluative comparison of four mood-reporting instruments with elderly users

Elderly users have widely adopted digital communication. Digital communication is often text-only, e.g. instant messaging (IM) and e-mail. Text-only communication has been found less effective than communication that uses richer channels such as audio and video. Mood expression instruments, such as emoticons, are used to increase the...