News and Recent Projects


Honorable Mention for Best Paper @ Ubicomp’15

Together with Ruben Gouveia and Marc Hassenzahl, we received an Honorable Mention Award for Best Paper for the paper How Do We Engage With Activity Trackers? A Longitudinal Study of Habito. The Honorable Mention Award is given to a paper that was identified by the... read more

Strong presence at Ubicomp’15

We are having a strong presence at Ubicomp’15, the premier conference in the area of Ubiquitous Computing, to be organized on Sept 7-11, 2015 in Osaka, Japan. We will be presenting the following papers:   Gouveia, R., Karapanos, E., Hassenzahl, M. (2015)... read more

The "how, where and when" of physical activity

Despite their initial premise of physical-activity trackers in altering individuals’ lifestyles, recent studies have questioned their long-term efficacy. We present a study that sought to understand the walking activities individuals incorporate into their daily... read more

Sustaining User Engagement with Behavior Change Tools

Technologies for behavior change have immense potential. Consider, for instance, the case of physical activity trackers. Our healthcare systems are facing unprecedented challenges. Western lifestyles, now spreading throughout the world, have had a direct impact on the... read more

PLEXQ: Towards a Playful Experiences Questionnaire

Playfulness is an important, but often neglected, design quality for interactive products. This paper presents a first step towards a validated questionnaire called PLEXQ, which measures 17 different facets of playful user experiences. We describe the development and... read more

CMU Portugal Grant awarded

Together with Jodi Forlizzi (Carnegie Mellon University) we received a research grant to study the long-term impact of personal health informatics tools. Funded by FCT (Portuguese Foundation for Science and Technology) under the Carnegie Mellon | Portugal Early Bird... read more

User Experience Over Time: An Initial Framework

A recent trend in Human-Computer Interaction (HCI) research addresses human needs that go beyond the instrumental, resulting in an increasing body of knowledge about how users form overall evaluative judgments on the quality of interactive products. An aspect largely... read more

User Experience Over Time

The way we experience and evaluate interactive products develops over time. An exploratory study aimed at understanding how users form evaluative judgments during the first experiences with a product as well as after four weeks of use. Goodness, an evaluative judgment... read more