References of "Koenig, Vincent 50002114"
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See detailMaking Encryption Feel Secure: Investigating how Descriptions of Encryption Impact Perceived Security
Distler, Verena UL; Lallemand, Carine UL; Koenig, Vincent UL

in The 5th European Workshop on Usable Security (EuroUSEC 2020) (2020)

When communication about security to end users is ineffective, people frequently misinterpret the protection offered by a system. The discrepancy between the security users perceive a system to have and ... [more ▼]

When communication about security to end users is ineffective, people frequently misinterpret the protection offered by a system. The discrepancy between the security users perceive a system to have and the actual system state can lead to potentially risky behaviors. It is thus crucial to understand how security perceptions are shaped by interface elements such as text-based descriptions of encryption. This article addresses the question of how encryption should be described to non-experts in a way that enhances perceived security. We tested the following within-subject variables in an online experiment (N=309): a) how to best word encryption, b) whether encryption should be described with a focus on the process or outcome, or both c) whether the objective of encryption should be mentioned d) when mentioning the objective of encryption, how to best describe it e) whether a hash should be displayed to the user. We also investigated the role of context (between subjects). The verbs “encrypt” and “secure” performed comparatively well at enhancing perceived security. Overall, participants stated that they felt more secure not knowing about the objective of encryption. When it is necessary to state the objective, positive wording of the objective of encryption worked best. We discuss implications and why using these results to design for perceived lack of security might be of interest as well. This leads us to discuss ethical concerns, and we give guidelines for the design of user interfaces where encryption should be communicated to end users. [less ▲]

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See detailHow Acceptable Is This? How User Experience Factors Can Broaden our Understanding of the Acceptance of Privacy Trade-Offs
Distler, Verena UL; Lallemand, Carine UL; Koenig, Vincent UL

in Computers in Human Behavior (2019)

Privacy is a timely topic that is increasingly scrutinized in the public eye. In spite of privacy and security breaches, people still frequently compromise their privacy in exchange for certain benefits ... [more ▼]

Privacy is a timely topic that is increasingly scrutinized in the public eye. In spite of privacy and security breaches, people still frequently compromise their privacy in exchange for certain benefits of a technology or a service. This study builds on both technology acceptance (TA) and user experience (UX) research in order to explore and build hypotheses regarding additional dimensions that might play a role in the acceptability of privacy tradeoffs that are not currently accounted for in TA models. Using four scenarios describing situations with potential privacy trade-offs, we conducted a focus group study with 8 groups of participants (N = 32). Our results suggest that factors influencing privacy trade-offs go beyond existing TA factors alone. A technology's perceived usefulness plays an important role, as well as dimensions related to context, previous experiences, perceived autonomy and the feeling of control over the data being shared. [less ▲]

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See detailUser Experience Design for E-Voting: How mental models align with security mechanisms
Zollinger, Marie-Laure UL; Distler, Verena UL; Roenne, Peter UL et al

in Electronic Voting (2019, October)

This paper presents a mobile application for vote-casting and vote-verification based on the Selene e-voting protocol and explains how it was developed and implemented using the User Experience Design ... [more ▼]

This paper presents a mobile application for vote-casting and vote-verification based on the Selene e-voting protocol and explains how it was developed and implemented using the User Experience Design process. The resulting interface was tested with 38 participants, and user experience data was collected via questionnaires and semi-structured interviews on user experience and perceived security. Results concerning the impact of displaying security mechanisms on UX were presented in a complementary paper. Here we expand on this analysis by studying the mental models revealed during the interviews and compare them with theoretical security notions. Finally, we propose a list of improvements for designs of future voting protocols. [less ▲]

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See detailSecurity – Visible, Yet Unseen? How Displaying Security Mechanisms Impacts User Experience and Perceived Security
Distler, Verena UL; Zollinger, Marie-Laure UL; Lallemand, Carine UL et al

in Proceedings of ACM CHI Conference on Human Factors in Computing Systems (CHI2019) (2019, April)

An unsolved debate in the field of usable security concerns whether security mechanisms should be visible, or blackboxed away from the user for the sake of usability. However, tying this question to ... [more ▼]

An unsolved debate in the field of usable security concerns whether security mechanisms should be visible, or blackboxed away from the user for the sake of usability. However, tying this question to pragmatic usability factors only might be simplistic. This study aims at researching the impact of displaying security mechanisms on user experience (UX) in the context of e-voting. Two versions of an e-voting application were designed and tested using a between-group experimental protocol (N=38). Version D displayed security mechanisms, while version ND did not reveal any security-related information. We collected data on UX using standardised evaluation scales and semi-structured interviews. Version D performed better overall in terms of UX and need fulfilment. Qualitative analysis of the interviews gives further insights into factors impacting perceived security. Our study adds to existing research suggesting a conceptual shift from usability to UX and discusses implications for designing and evaluating secure systems. [less ▲]

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See detailArt in Rich-Prospect: Evaluating Next-Generation User Interfaces for Cultural Heritage
Morse, Christopher UL; Koenig, Vincent UL; Lallemand, Carine UL et al

in Morse, Christopher; Koenig, Vincent; Lallemand, Carine (Eds.) et al MW2019: Museums and the Web, Boston 2-6 April 2019 (2019, March)

The present study reports on the user experience (UX) of rich-prospect browsing, an emerging interface design trend for digital cultural heritage. Building on research that suggests online museum ... [more ▼]

The present study reports on the user experience (UX) of rich-prospect browsing, an emerging interface design trend for digital cultural heritage. Building on research that suggests online museum collections are used only infrequently by the general public, this study investigates the role of next-generation user interfaces in the design of optimal browsing experiences. Moreover, it describes the results of user testing for three different arts and culture collections that make use of rich-prospect. The study recruited 30 participants of varying ages, nationalities, and museum visiting habits to discuss their museum experiences and test three different applications: Coins, Curator Table, and Museum of the World. The results of the study provide insights into the user experience of a new browsing medium and reveal the information-seeking habits and patterns that occurred within these information environments. Moreover, the study isolated the core features of rich-prospect in order to define opportunities and pain points during the browsing experience and indicated which features in particular are most important to people during the browsing experience. Finally, we suggest some best practices going forward in the design of rich-prospect. [less ▲]

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See detailExperience matters: Bridging the gap between experience- and functionality-driven design in technology-enhanced learning
Rohles, Björn UL; Koenig, Vincent UL; Fischbach, Antoine UL et al

in International Journal on Interaction Design & Architecture(s) (2019), 42

With the growing importance of digital technologies in learning and assessment, it is important to consider user experience (UX) to ensure that tools provide useful functionalities for learning without ... [more ▼]

With the growing importance of digital technologies in learning and assessment, it is important to consider user experience (UX) to ensure that tools provide useful functionalities for learning without overwhelming users, to motivate users and ensure that they have positive learning experiences, and to allow users to realize their potential with the help of technology. Building on a case study of concept mapping for technology-enhanced learning, we combined experience-driven and functionality-driven approaches in co-design sessions in four school classes (67 students). We investigated the anticipated experiences that students imagined as well as the functionalities and characteristics they expected. We found that combining experience-driven and functionality-driven approaches is a valuable method for improving technology-enhanced learning. [less ▲]

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See detailDark Patterns: Deception or Simply Bad Design?
Rossi, Arianna UL; Lenzini, Gabriele UL; Koenig, Vincent UL et al

Poster (2019)

Lately, researchers, journalists, and regulators are devoting attention to dark patterns, defined as "design choices that benefit an online service by coercing, steering or deceiving users into making ... [more ▼]

Lately, researchers, journalists, and regulators are devoting attention to dark patterns, defined as "design choices that benefit an online service by coercing, steering or deceiving users into making decisions that, if fully informed and capable of selecting alternatives, they would not make". Those patterns that have the purpose" or the "substantial effect of obscuring, subverting, or impairing user autonomy, decision-making, or choice" have also been qualified as dark. These definitions are dense: they contain concepts like coercion, nudging, and deception that all alone would deserve an entire work to be discussed. [less ▲]

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See detailA UX Approach to Privacy and Security: the Impact of User, Contextual and System-Related Factors
Distler, Verena UL; Lallemand, Carine UL; Koenig, Vincent UL

in CHI Workshop Exploring Individual Diffferences in Privacy (2018, April)

This position paper lays out current and future studies which we conduct on the UX aspects of security and privacy, our goal being to understand which factors influence privacy-related decision-making. We ... [more ▼]

This position paper lays out current and future studies which we conduct on the UX aspects of security and privacy, our goal being to understand which factors influence privacy-related decision-making. We advocate using UX design methods in order to study interindividual differences, system-related and contextual factors involved in privacy and security attitudes and behaviors. These results will contribute to user-tailored and personalized privacy initiatives and guide the design of future technologies. [less ▲]

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See detailÉvaluations numériques: quel rôle pour l’expérience utilisateur ?
Pere, Maxime UL; Lallemand, Carine UL; Koenig, Vincent UL

Scientific Conference (2018, January)

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See detailHow Could an Intranet be Like a Friend to Me?: Why Standardized UX Scales Don't Always Fit
Lallemand, Carine UL; Koenig, Vincent UL

in Proceedings of the European Conference on Cognitive Ergonomics 2017 (2017, October)

"I hope that this survey is a joke because it made me laugh so much". This quote is just one example of many negative respondents' reactions gathered during a large-scale user experience (UX) study ... [more ▼]

"I hope that this survey is a joke because it made me laugh so much". This quote is just one example of many negative respondents' reactions gathered during a large-scale user experience (UX) study. Unfortunately, the survey was no joke, rather a well-constructed and validated standardized UX scale. This paper critically reflects on the use and relevance of standardized UX scales for the evaluation of UX in business contexts. We report on a real-world use case where the meCUE questionnaire has been used to assess employees' experience (N=263) with their organization's intranet. Strong users' reactions to the survey's items and statistical analyses both suggest that the scale is unsuitable for the evaluation of business-oriented systems. Drawing on the description of this inadequacy, we discuss the quality of academic UX tools, calling into question the relevance for practice of academic methods. [less ▲]

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See detailThe vocabulary of Learner-Space Interactions - Understanding learning spaces experience through the repertory grid method
Lallemand, Carine UL; Koenig, Vincent UL

in Interaction Design & Architecture(s) (2017), 32

Higher education institutions are facing new educational challenges and are striving for an evolution in pedagogical practices. This evolution is accompanied by the need for innovative learning spaces to ... [more ▼]

Higher education institutions are facing new educational challenges and are striving for an evolution in pedagogical practices. This evolution is accompanied by the need for innovative learning spaces to support students in the development of “21st century skills”. Designing these spaces requires a deep understanding of learners’ needs and experiences. User-centered design therefore appears as an adequate process to understand learning experiences in relation to spatial design. In this paper, we describe how the repertory grid method has been used to explore students’ perceptions of learning environments (N = 26). We identified 381 personal constructs (contrasted word pairs) associated with learning spaces and grouped them into seven categories (22 subcategories), ranked by number of occurrences. This study provides a basis for the development of a vocabulary of learners-spaces interactions, in support of the design and assessment of learning space experiences. [less ▲]

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See detailLab Testing Beyond Usability: Challenges and Recommendations for Assessing User Experiences
Lallemand, Carine UL; Koenig, Vincent UL

in Journal of Usability Studies (2017), 12(3), 133-154

In the “third wave” of human-computer interaction (HCI), the advent of the conceptual approach of UX broadens and changes the HCI landscape. Methods approved before, mainly within the conceptual approach ... [more ▼]

In the “third wave” of human-computer interaction (HCI), the advent of the conceptual approach of UX broadens and changes the HCI landscape. Methods approved before, mainly within the conceptual approach of usability, are still widely used, and yet their adequacy for UX evaluation remains uncertain in many applications. Laboratory testing is undoubtedly the most prominent example of such a method. Hence, in this study, we investigated how the more comprehensive and emotional scope of UX can be assessed by laboratory testing. In this paper, we report on a use case study involving 70 participants. They first took part in user/laboratory tests and then were asked to evaluate their experience with the two systems (perceived UX) by filling out an AttrakDiff scale and a UX needs fulfillment questionnaire. We conducted post-test interviews to better understand participants’ experiences. We analyzed how the participants’ perceived UX depends on quantitative (e.g., task completion time, task sequence, level of familiarity with the system) and qualitative aspects (think aloud, debriefing interviews) within the laboratory context. Results indicate that the laboratory setting has a strong impact on the participants’ perceived UX, and support a discussion of the quality and limitations of laboratory evaluations regarding UX assessment. In this paper, we have identified concrete challenges and have provided solutions and tips useful for both practitioners and researchers who seek to account for the subjective, situated, and temporal nature of the UX in their assessments. [less ▲]

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See detailDie Lernplattform MathemaTIC: Digitales Erlernen der kognitiven Prozesse im Sachrechnen im Alter von 8 bis 10 Jahren
Haas, Ben; Kesting, Frauke; Martin, Romain UL et al

in Kortenkamp, Ulrich; Kuzle, Ana (Eds.) Beiträge zum Mathematikunterricht 2017 (2017)

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See detailL’utilisation de l’environnement numérique MathemaTIC pour développer les compétences dans le domaine de la résolution de problèmes arithmétiques
Haas, Ben; Kreis, Yves UL; Koenig, Vincent UL et al

Scientific Conference (2016, November 21)

Dans le cadre du « Digital Lëtzebuerg » et suite à l’appel Horizon 2020 par la commission européenne, le gouvernement du Luxembourg a lancé des initiatives pour l'implémentation du numérique dans ses ... [more ▼]

Dans le cadre du « Digital Lëtzebuerg » et suite à l’appel Horizon 2020 par la commission européenne, le gouvernement du Luxembourg a lancé des initiatives pour l'implémentation du numérique dans ses différents ministères. Dans ce contexte, l’éducation nationale a initié le développement d’un environnement numérique pour l'apprentissage des mathématiques à l’écolefondamentale pour les élèves de cycle 4,Université du c'est-à-dire âgés de 10 à 12 ans. Suite au constat de faibles performances en mathématiques aux épreuves standardisées de début de cycle 3 (élèves de 8 à 10 ans), la question d'élargir l'implémentation de cet environnement numérique à ce cycle s'avère opportune. En effet, les résultats à ces épreuves indiquent que d’une part un quart de ces élèves n’arrive pas à atteindre le niveau socle et que d’autre part les résultats ne se sont que peu améliorés entre 2011 et2013. En d'autres termes, il y aurait donc un quart de la population scolaire de cycle 3 qui n’ aurait pas les compétences nécessaires pour suivre les apprentissages prévues en mathématiques. Les élèves concernés sont majoritairement d'un milieu socio-économique faible et issus de la migration.Ainsi, une étude est envisagée pour voir dans quelle mesure l’usage de l’environnement MathemaTIC favoriserait le développement des compétences en mathématiques, notamment dans le domaine de la résolution de problèmes arithmétiques. Cette étude se réalisera entre 2016 et 2018 avec un échantillon de 20 classes (400 élèves). Les items seront construits en partant des niveaux testés dans les Ep.Stan 3.1 et en se basant sur le plan d’études du cycle 3. Pour ce faire, l'approche adoptée est celle dite " centrée utilisateur ", issue du domaine des Interactions Hommes-Machines (IHM). Les compétences au début et à la fin de l’utilisation-même de l'environnement MathemaTIC par les élèves de cycle 3 seront mesurées par les épreuves standardisées Ep. Stan, sous le couvert du Lucet. [less ▲]

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See detailTransition vers le numérique : Quelles implications pour l’évaluation des élèves et leurs apprentissages ?
Rocher, Thierry; Fischbach, Antoine UL; Klausing, Andreas et al

Scientific Conference (2016, January)

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See detailDriving while using a smartphone-based mobility application: Evaluating the impact of three multi-choice user interfaces on visual-manual distraction
Louveton, Nicolas UL; Mccall, Roderick UL; Koenig, Vincent UL et al

in Applied Ergonomics (2016), 54

Innovative in-car applications provided on smartphones can deliver real-time alternative mobility choices and subsequently generate visual-manual demand. Prior studies have found that multi-touch gestures ... [more ▼]

Innovative in-car applications provided on smartphones can deliver real-time alternative mobility choices and subsequently generate visual-manual demand. Prior studies have found that multi-touch gestures such as kinetic scrolling are problematic in this respect. In this study we evaluate three prototype tasks which can be found in common mobile interaction use-cases. In a repeated-measures design, 29 participants interacted with the prototypes in a car-following task within a driving simulator environment. Task completion, driving performance and eye gaze have been analysed. We found that the slider widget used in the filtering task was too demanding and led to poor performance, while kinetic scrolling generated a comparable amount of visual distraction despite it requiring a lower degree of finger pointing accuracy. We discuss how to improve continuous list browsing in a dual-task context. [less ▲]

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See detailChanging Mobility Behaviour through Recommendations
McCall, Rod; Koenig, Vincent UL; Martin, Romain UL et al

in Proceedings of the ACM Recsys CrowdRec Workshop 2015 (2015, September 19)

In this paper, we describe a road traffic behaviour and mobility case study that was implemented in June 2015 in the congested city of Luxembourg. We explain the development and deployment of the Gamified ... [more ▼]

In this paper, we describe a road traffic behaviour and mobility case study that was implemented in June 2015 in the congested city of Luxembourg. We explain the development and deployment of the Gamified mobile application Commutastic that offers users incentives to undertake after work activities. With Commutastic we try to persuade users to change their commuting time so as to avoid the evening peak. Furthermore we investigate the behaviour change with focus groups and questionnaires. The preliminary data indicates that behaviour change is possible and that traffic reduction can happen on a bigger scale. [less ▲]

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See detailCréation et validation d’une version française du questionnaire AttrakDiff pour l’évaluation de l’expérience utilisateur des systèmes interactifs
Lallemand, Carine UL; Koenig, Vincent UL; Gronier, Guillaume et al

in European Review of Applied Psychology = Revue Européenne de Psychologie Appliquée (2015)

Introduction While user experience (UX) evaluation is a core concern within the field of human–computer interaction (HCI), there is currently no valid self-administered UX evaluation tool in French. The ... [more ▼]

Introduction While user experience (UX) evaluation is a core concern within the field of human–computer interaction (HCI), there is currently no valid self-administered UX evaluation tool in French. The AttrakDiff 2 scale (Hassenzahl, Burmester, & Koller, 2003) is a UX evaluation tool, which relies on a theoretical model distinguishing pragmatic and hedonic qualities of interactive systems. Objective This paper describes the translation and validation of the French version of the AttrakDiff 2 scale in order to ease UX assessment in French-speaking users. Method Following the cross-cultural methodology developed by Vallerand (1989), the questionnaire was translated by trilingual researchers before being back-translated and validated by a panel of experts. A pre-test was conducted on 26 participants. The characteristics of the French version of the AttrakDiff 2 scale were then evaluated through a quantitative online study involving a sample of 381 users. Results The results confirm the expected 3 factors structure and a good internal consistency of each subscale. The links between factors are consistent with Hassenzahl's theoretical model (2003) where pragmatic and hedonic perceived attributes combine to form a judgment of attractiveness. Conclusion The current French version of the AttrakDiff 2 scale is globally reliable with regards to the initial German version and presents satisfactory levels of validity and reliability. [less ▲]

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See detailDo graphical cues effectively inform users? A Socio-Technical Security Study in Accessing Wifi Networks
Ferreira, Ana; Huynen, Jean-Louis; Koenig, Vincent UL et al

in Proc. of the International Conference on Human Aspects of Information Security, Privacy, and Trust (2015, July 21)

We study whether the padlock and the signal strength bars, two visual cues shown in network managers, convey their intended messages. Since users often choose insecure networks when they should not ... [more ▼]

We study whether the padlock and the signal strength bars, two visual cues shown in network managers, convey their intended messages. Since users often choose insecure networks when they should not, finding the answer is not obvious; in our study we clarify whether the problem lies in uninformative and ambiguous cues or in the user who, despite understanding the cues, chooses otherwise. This paper describes experiments and comments the results that bring evidence to our study [less ▲]

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