Usability model based on traditional metrics and physiological and eye tracking variables depending on user profile

Abstract

Usability recommendations need to be checked with users, combining subjective methodologies with objective and quantitative approaches. The use of physiological response and eye tracking variables allowed detecting better the effect of usability recommendations and user profile. Moreover, some usability recommendations seems to have low effect on improving usability and even can difficult the interaction for users without functional limitaions. Finally, a model to assess the usability has been defined, which related web design parameters with objective variables and user perception, where task outcomes are key indicators for users without functional limitations while variables related with emotional response or behaviour are more important for users with motor disorders.