Category Archives: News

A sabbatical semester

We’ve just came back from a productive sabbatical. Chrysanthi spend two months at the Telefonica research labs in Barcelona, supported by the Encase project, Loukas spend his semester at the Jheronimus Academy of Data Science in Tilburg, NL, and I visited the Interaction Design Lab of the University of Melbourne. We had lots of fun and have some interesting stuff on the pipeline…

Congratulations to Dr. Ruben Gouveia!

One of our very own, Rúben Gouveia, successfully defended his Ph.D. thesis entitled “Tracking in the wild: Exploring the everyday use of physical activity trackers”. Rúben is moving to the University of Twente as an Assistant Professor as of Sept 1st, 2019. Rúben! it has been more than a pleasure!

Research visit of Elçin Hancı

We had the pleasure of hosting between February and April 2019, Elçin Hancı – Ph.D. candidate at the Human-Technology Interaction group of the Eindhoven University of Technology. Elcin’s working hypothesis, in her PhD studies, is that we treat physical activity trackers as social actors. Her work involves experimental studies of social effects on participants’ perceptions of the tracker, and motivation for physical activity (see her recent publication at Persuasive’19). We had a lot of interesting discussions and worked towards a joint publication. The photo depicts Elçin and the rest of the lab – Chrysanthi, Georgia and Loukas (from right to left) – as happy student volunteers at the Persuasive’19 conference that we hosted here in Limassol. Elçin, it was a pleasure!

CHI’19 paper – 23 Ways to Nudge: A Review of Technology-Mediated Nudging in Human-Computer Interaction

Ten years ago, Thaler and Sunstein introduced the notion of nudging to talk about how subtle changes in the ‘choice architecture’ can alter people’s behaviors in predictable ways. This idea was eagerly adopted in HCI and applied in multiple contexts, including health, sustainability and privacy. Despite this, we still lack an understanding of how to design effective technology-mediated nudges. In this paper we present a systematic review of the use of nudging in HCI research with the goal of laying out the design space of technology-mediated nudging – the why (i.e., which cognitive biases do nudges combat) and the how (i.e., what exact mechanisms do nudges employ to incur behavior change). All in all, we found 23 distinct mechanisms of nudging, grouped in 6 categories, and leveraging 15 different cognitive biases. We present these as a framework for technology-mediated nudging, and discuss the factors shaping nudges’ effectiveness and their ethical implications.
Caraban, A., Karapanos, E., Gonçalves, D. & Campos, P. (2018) 23 Ways to Nudge: A Review of Technology-Mediated Nudging in Human-Computer Interaction, In Proceedings of CHI’19.

Ruben Gouveia Finalist for the Gaetano Borriello Outstanding Student Award

Ruben Gouveia has been selected as a finalist for the Gaetano Borriello Outstanding Student Award at Ubicomp 2018 along with four other students from Cornell University, the University of Washington and Stuttgart University. The award was given to Alex Mariakakis from the University of Washington. More information at:

Ruben is finishing his PhD studies at University of Madeira, under the supervision of Dr. Evangelos Karapanos. Ruben’s work has tried to understand how users engage with physical activity trackers and to design appropriate strategies that increase user engagement and lead to behavior change. More information about Ruben’s work can be found at

Persuasive’19 coming to Limassol!

We’re proudly hosting Persuasive’19 in Limassol, from April 9 to 11, 2019. Persuasive Technology (PT) is a vibrant interdisciplinary research community, focusing on the design, development and evaluation of interactive technologies aimed at changing people’s attitudes or behaviors through persuasion and social influence, but not through coercion or deception.

H2020 project kick-off: Co-inform

The official kick-off of the H2020 project Co-Inform took place in May’18. Co-Inform is about empowering citizens, journalists and policy-makers with co-created socio-technical solutions, to increase resilience to misinformation and to generate more informed behaviours and policies. The aim of Co-Inform is to co-create this solutions with citizens, journalists and policy-makers for:

  • Detecting and combating a variety of misinforming posts and articles on social media;
  • Supporting, persuading and nourishing misinformation-resilient behaviour;
  • Bridging between the public on social media, external fact-checking journalists, and policy-makers;
  • Understanding and predicting which misinforming news and contents are likely to spread across which parts of the network and demographic sectors;
  • Infiltrating echo-chambers on social media to expose confirmation-biased networks to different perceptions and corrective information; and
  • Providing policy-makers with advanced misinformation analysis to support their policy-making processes and validation.

Our work will explore the design of technological interventions that nudge individuals towards misinformation-resilient behaviours. CUT is further represented by Dr. Elena Kyza (PI) and Dr. Dionysis Panos.

Research visitors

We had the pleasure of welcoming two research visitors over the past months.

Mr Olli Korhonen, PhD student at the Interact Research Unit of the University of Oulu, advised by Prof. Minna Isomursu, visited our lab between January and February 2018 (16.1-13.2) as part of a short-term scientific mission in the context of the European Network for the Joint Evaluation of Connected Health Technologies. Olli’s work focuses on the personalisation of e-health services. The scope of Olli’s visit was to inquire into the nature of personalisation in the context of health behavior change technologies, across three domains of activity of the lab – gamification, goal-setting and nudging.

Our own Rúben Gouveia, who is completing his PhD studies at the University of Madeira and Madeira Interactive Technologies Institute, visited our lab between October 2017 and February 2018. During his time here, Rúben designed and conducted a field trial of a novel smartwatch application for the promotion of physical activity. He is currently analyzing the data and planning the write-up of what is expected to be the last study in his thesis. In the meantime, Ruben also got a full paper accepted at the top-tier ACM CHI conference.

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 HabitoThe Honorable Mention Award is given to a paper that was identified by the Program Committee as being among the top 5% of all submissions to UbiComp 2015. UbiComp is the premier interdisciplinary conference in the field of ubiquitous and pervasive computing, and a top-ranked international conference in computer science.