Evangelos Karapanos

Evangelos Karapanos
Cyprus University of Technology · Department of Communication and Internet Studies

PhD

About

115
Publications
67,192
Reads
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3,533
Citations
Citations since 2017
23 Research Items
2339 Citations
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20172018201920202021202220230100200300400
20172018201920202021202220230100200300400
Additional affiliations
January 2016 - present
Cyprus University of Technology
Position
  • Professor (Assistant)
September 2010 - present
Madeira Interactive Technologies Institute
Position
  • Professor (Assistant)
September 2010 - December 2015
Universidade da Madeira
Position
  • Professor (Assistant)

Publications

Publications (115)
Conference Paper
Full-text available
Recent research reveals over 70% of the usage of physical activity trackers to be driven by glances – brief, 5-second sessions where individuals check ongoing activity levels with no further interaction. This raises a question as to how to best design glanceable behavioral feedback. We first set out to explore the design space of glanceable feedbac...
Conference Paper
Full-text available
We report on a 10-month in-the-wild study of the adoption, engagement and discontinuation of an activity tracker called Habito, by a sample of 256 users who installed the tracker on their own volition. We found 'readiness' to behavior change to be a strong predictor of adoption (which ranged from 56% to 20%). Among adopters, only a third updated th...
Article
Full-text available
Technologies for behavior change have immense potential. Consider, for instance, the case of physical activity trackers. The healthcare systems are facing unprecedented challenges. Western lifestyles, now spreading throughout the world, have had a direct impact on the increase of chronic diseases, which today account for nearly 40 percent of mortal...
Article
Full-text available
Background: Wearable activity trackers have become a viable business opportunity. Nevertheless, research has raised concerns over their potentially detrimental effects on wellbeing. For example, a recent study found that while counting steps with a pedometer increased steps taken throughout the day, at the same time it decreased the enjoyment peop...
Conference Paper
Full-text available
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 neglected so far is that of temporality, i.e. how the quality of users' experience...
Article
Full-text available
Despite a wealth of behavior change theories and techniques available, designers often struggle to apply theory in the design of behavior change technologies. We present the Behavior Change Design (BCD) cards, a design support tool that makes behavioral science theory accessible to interaction designers during design meetings. Grounded on two theor...
Article
Social media have become online spaces where misinformation abounds and spreads virally in the absence of professional gatekeeping. This information landscape requires everyday citizens, who rely on these technologies to access information, to cede control of information. This work sought to examine whether the control of information can be regaine...
Poster
Over the past 10 years, research has explored subtle changes in the environment that can alter people's behaviors in a predictable way. These small changes, so-called nudges, offer an effective way to influence peoples' behavior without restricting their freedom of choice. Yet, while a wealth of nudges have been developed and studied over the years...
Chapter
Empirical studies of activity tracking in HCI research have paid little attention to the impact of the visual presentation of motivational text messages on exercise motivation, even though, these days, motivational texts are often embedded in a visual presentation (such as visual quotes). Herein, we report the results of an online experiment with a...
Conference Paper
Full-text available
We study the motives of regular and non-regular exercisers' engagement with motivational text messages and the importance individuals attribute to visual presentation. A total of 160 individuals were surveyed (80 regular exercisers and 80 non-regular exercisers). We found regular exercisers use motivational text messages in order to encourage their...
Conference Paper
Full-text available
Many people nowadays engage with motivational text messages embedded in a visual presentation. However, empirical studies of the impact of textual messages on users’ motivation to exercise have paid little attention to how their visual appeal impacts their motivational capacity. We conducted an online experiment to explore the impact of visual aest...
Chapter
Recent studies have shown that the spread and consumption of misinformation online can be attributed to errors in human decision making, facilitated by cognitive biases. The field of Behavioral Economics has contributed a repertoire of such cognitive biases that can be leveraged for the design of technological interventions. In particular, the conc...
Chapter
Full-text available
The manipulation of information and the dissemination of “fake news” are practices that trace back to the early records of human history. Significant changes in the technological environment enabling ubiquity, immediacy and considerable anonymity, have facilitated the spreading of misinformation in unforeseen ways, raising concerns around people’s...
Conference Paper
Full-text available
Visual Quotes, or the communication of motivational text messages in a visual format, are increasingly used across social media and online communities. While physical activity trackers could leverage visual quotes, empirical studies of activity tracking in HCI research have paid little attention to this phenomenon and their potential effects on mot...
Conference Paper
Full-text available
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 t...
Article
Full-text available
Despite the recent increase in interest in the experience sampling method (ESM), researchers have repeatedly criticised the high burden and levels of interruption that it imposes on participants, and alternative cost-effective methods, such as the Day Reconstruction Method (DRM), have been adopted by the Human-Computer Interaction (HCI) community....
Conference Paper
Despite the initial premise of behavior change tools, recent work has questioned their efficacy over the long term. Many of these technologies rely on a "one-size fits all" strategy -- self-monitoring -- to foster behavior change. However, individual's capacity to change their behaviors depends on their ability and motivation for self-regulation. W...
Conference Paper
Goal setting is a theoretically grounded, empirically supported, and one of the most popular behavior change strategies employed by activity trackers -- individuals set daily activity goals (e.g., 10000 steps) and continuous feedback on their performance is provided by the tracker. But while empirical studies are in abundance, we still have a liMas...
Conference Paper
Full-text available
While recent research has emphasized the importance of understanding the lived experience of personal tracking, very little is known about the everyday coordination between tracker use and the surrounding environment. We combine behavioral data from trackers with video recordings from wearable cameras, in an attempt to understand how usage unfolds...
Conference Paper
Creative writing requires the manipulation of language in demanding ways, as individuals attempt to uniquely express themselves. As a result, during creative writing people often experience the writer's block: a stress reaction that affects their ability to write. Addressing this problem, creativity support tools have been incorporating story promp...
Article
Empirical environment and behavior research has found that empathy improves environmental attitudes and behaviors. Emotionally persuasive icons (EPIs) show promise for creating empathy and for the design of effective eco-feedback technologies, particularly among children. Yet studies using these icons have focused on adults, with little research de...
Conference Paper
Full-text available
The use of motivational textual messages is a popular strategy for encouraging behavior change. Social media platforms, such as Instagram, have afforded tailored visual presentations of the text of such messages, that range in style, by exploring color, illustration, photography, or typography. Following the fact that different text aesthetics can...
Conference Paper
Full-text available
With 50% of people spending over 6 h per day surfing the web, web browsers offer a promising platform for the delivery of behavior change interventions. One technique might be subliminal priming of behavioral concepts (e.g., walking). This paper presents Subly, an open-source plugin for Google’s Chrome browser that primes behavioral concepts throug...
Conference Paper
This work in progress paper explores users' perceptions of the aesthetics of interaction. We describe a qualitative study using the Repertory Grid Technique (RGT) that elicited individuals' personal constructs, bipolar adjectives such as beautiful vs ugly that characterize individuals' idiosyncratic ways of classifying and differentiating between a...
Conference Paper
Full-text available
The active monitoring of workload levels has been found to significantly reduce work-related stress. Heart rate and heart rate variability (HRV) measurements via photoplethysmography (PPG) sensors have shown a strong potential to accurately describe daily workload levels. However, due its complexity, HRV is commonly misunderstood and the associated...
Conference Paper
Full-text available
Users of quantified self applications habitually log and track personal information, such as mood. Attempts to automate the procedure of logging mood have been made, but applications themselves rarely provide insights into the user's mental well-being. In this paper we explore data from two small scale studies related to mobile device usage and moo...
Article
Full-text available
The behavior change process is a dynamic journey with different informational and motivational needs across its different stages; yet current technologies for behavior change are static. In our recent deployment of Habito, an activity tracking mobile app, we found individuals "readiness" to behavior change (or the stage of behavior change they were...
Article
Full-text available
We describe Hydroprompt, a prototype for sensing and motivating healthy water intake in work environments. In a 3-week field deployment of Hydroprompt, we evaluate the effectiveness of three approaches to behavior change: historical information enabling users to compare their water intake lev- els across different times of day and days of week, imp...
Conference Paper
Full-text available
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 validation of the questionnaire, from the generation of 231 items, to the current...
Conference Paper
Full-text available
Despite the initial premise of activity trackers, recent work has questioned their long-term efficacy in supporting behavior change. This paper makes two contributions. First, we present a study that inquired into individuals' ways of incorporating physical activity into their daily routines – and specifically, the "why, how, when and where" of phy...
Conference Paper
Full-text available
People engage with activity trackers in short sessions: over 70% are defined by glances – brief, 5-second sessions where individuals check ongoing activity levels with no further interaction. We explore how to best leverage such short sessions to maximize positive impact on behavior. To do so, we explore the design of Glanceable Behavioral Feedback...
Conference Paper
People engage with activity trackers in short sessions: over 70% are defined by glances -- brief, 5-second sessions where individuals check ongoing activity levels with no further interaction. We explore how to best leverage such short sessions to maximize positive impact on behavior. To do so, we explore the design of Glanceable Behavioral Feedbac...
Conference Paper
The earlier in life an individual adopts healthy practices the more impact those practices have on the long term. In this paper we present Social Toothbrush, a hardware plugin for electric toothbrushes that aims to induce proper tooth brushing behaviors on young children and adults. Social Toothbrush does so by taking advantage of family communicat...
Conference Paper
Full-text available
This paper presents insights on driver’s User Experience (UX) in terms of systematically investigating predicted experience, actual experience, and recalled experience. By conducting a three-week field study with car commuters in two countries, we studied how frustration and anger differentiate in prediction, actual experience, and recall. Our resu...
Conference Paper
Full-text available
Well-established self-reporting methods in HCI such as the Experience Sampling Method (ESM) prove rather limited for sampling in-car experiences, as they distract the driver from the primary task of driving. In this work we present eMotion, a mobile application that provides a lightweight alternative to Experience Sampling. eMotion uses the front a...
Conference Paper
Full-text available
Inclusive education, or the idea of 'one school for all' has received wide interest in recent years, yet researchers have criticised a lack of empirical evidence on how exclusion is manifested in pupils' behaviours. This paper presents Proximy, a mobile app that senses children's social interactions during free play through sampling the Bluetooth s...
Conference Paper
Full-text available
How does theory inform practice in User Experience research, and vice versa? We focus on two popular UX frameworks – i.e., Hassenzahl's hedonic-pragmatic model and McCarthy & Wright's sense-making experience – and inquire into their influence on design practice through the study of " Strong Concepts " (SC), one form of intermediate-level knowledge...
Conference Paper
Full-text available
Gamification, the use of game design elements, such as points, levels, badges and achievements, in non-game contexts is a promising approach for encouraging desired behaviors. In this paper we describe our design process and early evaluation of a prototype that sensed children's social interactions (i.e., physical proximity) in the playground, and...
Conference Paper
With an increasing emphasis on preventive and user-driven healthcare, the market of personal informatics tools for health, such as wearable activity trackers, has received rapid growth. However, recent research has shown that most activity trackers have failed to drive sustained engagement for the majority of users. With this study we present initi...
Article
Full-text available
We introduce EmoSnaps, a mobile application that captures unobtrusively pictures of one’s facial expressions throughout the day and uses them for later recall of her momentary emotions. We describe two field studies that employ EmoSnaps in an attempt to investigate if and how individuals and their relevant others infer emotions from self-face and f...
Article
With an increasing emphasis on behavior change technologies, interest has grown over time also on the role of HCI in motivating healthy tooth brushing habits on children. In this paper we present the design and development of SmartHolder, a toothbrush holder that senses the frequency and duration of toothbrush practices and motivates healthy tooth...
Article
Full-text available
In this study, we demonstrate how analysis of users' social network structure-a topic that has remained until recently inconspicuous within Human-Computer Interaction (HCI) research on social systems-can contribute to our understanding of Social Networking Services (SNS) effect on users. Despite a consensus that SNS enhance people's social capital,...
Article
A recent trend in technological innovation is towards the developmentof increasingly multifunctional and complex products to be used within rich socio-cultural contexts such asthe high-endoffice,the digitalhome,andprofessionalor personalhealthcare. One important consequence of the development of strongly innovative products is a growing market unce...
Article
Full-text available
Although advances in technology now enable people to communicate ‘anytime, anyplace’, it is not clear how citizens can be motivated to actually do so. This paper evaluates the impact of three principles of psychological empowerment, namely perceived self-efficacy, sense of community and causal importance, on public transport passengers’ motivation t...
Article
Full-text available
Experts state that research on playfulness and gamification has looked at video games to create better user experiences from user interfaces. Researchers are making efforts to understand how playfulness can be employed in creating meaningful and memorable experiences for users. Playfulness is an important, but neglected design quality for all kinds...
Article
Full-text available
We present BreakOut, a desktop system that infers an individual's posture, stress levels, and engagement with computer related tasks with the goal of recommending a break of sedentary behaviour at appropriate times. We present an Experience Sampling study that attempted to evaluate BreakOut's ability to infer users' posture and stress from a single...
Conference Paper
Full-text available
Awareness campaigns aiming to highlight the accessibility challenges affecting people with disabilities face an important challenge. They often describe the environmental features that pose accessibility barriers out of context, and as a result public cannot relate to the problems at hand. In this paper we demonstrate that contextual cues can enhan...
Conference Paper
Full-text available
Eco-feedback domestic technologies have gained momentum over the last decade. Yet, while a wide range of research prototypes and commercial products has been proposed, their acceptance by families is still limited. In this paper we report on our findings from interviews with 15 dual income families, during a year-long deployment of an eco-feedback...
Conference Paper
Full-text available
The children of today are the adults of tomorrow, for this reason it is essential to educate this generation about sustainable values, such as recycling and reducing waste and energy consumption. By targeting children’s main activity of playing and toys, the design of a toy that instills sustainable values is illustrated through PlayGreen, a protot...
Article
Full-text available
Safeguarding personally identifiable information (PII) is crucial because such information is increasingly used to engineer privacy attacks, identity thefts and security breaches. But is it likely that individuals may choose to just share this information with strangers? This study examines how reciprocation can lead to the disclosure of PII betwee...
Conference Paper
Full-text available
With an increasing interest in the social inclusion of children in schools, HCI researchers have proposed technologies that support children at risk of social exclusion in their interactions with peers. However, much of this work has focused on the child at risk of social exclusion, disregarding the fact that social exclusion is a group-phenomenon...
Conference Paper
Applications aiming at behavior change are gaining momentum within HCI. Much of that work has been built upon the idea of psychological empowerment. We report on a qualitative study that aimed at inquiring at an alternative path to behavior change through strengthening individuals' feelings of personal accountability. Two behavior-change-related sc...
Conference Paper
Full-text available
Mobile phones allow us to reach people anywhere, at anytime. In addition to the benefits for end users, researchers and developers can also benefit from the powerful devices that participants carry on a daily basis. Collectively, mobile phones form a ubiquitous computer. Ubiquitous Mobile Instrumentation (UbiMI) workshop focuses on using mobile dev...
Conference Paper
Full-text available
The Playful Experiences (PLEX) framework is a categorization of playful experiences based on previous theoretical work on pleasurable experiences, game experiences, emotions, elements of play, and reasons why people play. While the framework has been successfully employed in design-related activities, its potential as an evaluation tool has not yet...
Article
Full-text available
Victims, volunteers and relief organizations are increasingly using social media to report and act upon large-scale events, as witnessed in the extensive coverage of the 2010-2012 Arab Spring uprisings and 2011 Japanese tsunami and nuclear disasters. Twitter feeds consist of short messages, often in nonstandard local language, requiring novel techn...
Conference Paper
Full-text available
In this paper we adopt a network science approach to investigate empathy and its implications for online social networks. We demonstrate that empathy is closely linked to social capital -the findings suggest that individuals higher on cognitive empathic skill are overall likely to report both higher bridging and higher bonding social capital. On th...
Conference Paper
Measuring children's behaviors and experiences has been one of the core interests of the field of Child-Computer Interaction. However, maintaining children's engagement in the evaluation process is one of the challenges that researchers need to meet. In this paper we introduce Playful Booth, a system that aimed at engaging children in playful photo...
Conference Paper
Full-text available
Technological advances, such as software tools for citizen reporting, first responder support, and online collaborative information management and mapping, are enabling new or improved forms of volunteering in humanitarian crisis. However, the change is largely driven by the technical community and many proposed solutions are never integrated into...
Conference Paper
Full-text available
While the Experience Sampling Method is considered the gold standard of in-situ measurement, researchers have highlighted its drawbacks, in disrupting participants' activities and providing limited insights to the remote researcher. We propose a mixed approach that combines field studies with systematic lab-based Experience Sampling in four steps:...