Authors: Ya-Hsin Hung, Paul Parsons
Abstract: Engagement is an important aspect of user experience, yet its evaluation has not received much attention in the InfoVis literature. For visualization design and evaluation, it is useful to understand both the characteristics of user engagement and how engagement develops and changes over time. We describe a study that used a mixed-methods approach to evaluate user engagement with two different types of visualizations. Multiple qualitative and quantitative methods – including think aloud, eye-tracking, questionnaires, and interviews – were employed. We report initial results involving verbal protocols and eye-tracking data. We reflect on the findings and discuss plans for further data analysis and future research.