Now showing 1 - 10 of 39
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Dark Patterns: manipulative Designstrategien in digitalen Gesundheitsanwendungen

2024-02-08 , Mildner, Thomas , Savino, Gian-Luca , Schöning, Johannes , Malaka, Rainer

Among other things, digital health applications offer users support in better understanding their physical and mental health through digital data, thereby promoting positive health behavior. In addition to state-approved digital health applications (DiGA) and digital care applications (DiPA), there is a wide array of other commercial health applications available to users. Particularly in non-approved applications, developers often deploy manipulative design strategies (dark patterns), intentionally or unintentionally, to deceive users into making specific decisions. This article provides an overview of current and widespread dark patterns and assesses the risks posed by them in digital health applications. In the future, “light” should be shed on dark patterns by creating more transparency for users, providing regulators with a more accurate understanding of dark patterns, and paying more attention to the implementation of guidelines. Thus, users may gain autonomy using healthcare applications and their data can be better protected.

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Free as a Bird, but at What Cost? The Impact of Street Networks on the User Experience of As-The-Crow-Flies Navigation for Cyclists

2022-09-01 , Savino, Gian-Luca , Kariryaa, Ankit , Schöning, Johannes

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Disability in space: Aim high

2021 , Heinicke, Christiane , Kaczmarzyk, Marcin , Tannert, Benjamin , Wasniowski, Aleksander , Perycz, Malgorzata , Schöning, Johannes

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Experiencing Dynamic Weight Changes in Virtual Reality Through Pseudo-Haptics and Vibrotactile Feedback

2024 , Carolin Stellmacher , Feri Irsanto Pujianto , Tanja Kojic , Jan-niklas Voigt-antons , Johannes Schöning

Virtual reality (VR) objects react dynamically to users’ touch interactions in real-time. However, experiencing changes in weight through the haptic sense remains challenging with consumer VR controllers due to their limited vibrotactile feedback. While prior works successfully applied pseudo-haptics to perceive absolute weight by manipulating the control-display (C/D) ratio, we continuously adjusted the C/D ratio to mimic weight changes. Vibrotactile feedback additionally emphasises the modulation in the virtual object’s physicality. In a study (N=18), we compared our multimodal technique with pseudo-haptics alone and a baseline condition to assess participants’ experiences of weight changes. Our findings demonstrate that participants perceived varying degrees of weight change when the C/D ratio was adjusted, validating its effectiveness for simulating dynamic weight in VR. However, the additional vibrotactile feedback did not improve weight change perception. This work extends the understanding of designing haptic experiences for lightweight VR systems by leveraging perceptual mechanisms.

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Impact of Social Reference Cues on Misinformation Sharing on Social Media: Series of Experimental Studies

2023-08-24 , Jones, Christopher , Diethei, Daniel , Schöning, Johannes , Shrestha, Rehana , Jahnel, Tina , Schüz, Benjamin

Background: Health-related misinformation on social media is a key challenge to effective and timely public health responses. Existing mitigation measures include flagging misinformation or providing links to correct information, but they have not yet targeted social processes. Current approaches focus on increasing scrutiny, providing corrections to misinformation (debunking), or alerting users prospectively about future misinformation (prebunking and inoculation). Here, we provide a test of a complementary strategy that focuses on the social processes inherent in social media use, in particular, social reinforcement, social identity, and injunctive norms. Objective: This study aimed to examine whether providing balanced social reference cues (ie, cues that provide information on users sharing and, more importantly, not sharing specific content) in addition to flagging COVID-19-related misinformation leads to reductions in sharing behavior and improvement in overall sharing quality. Methods: A total of 3 field experiments were conducted on Twitter's native social media feed (via a newly developed browser extension). Participants' feed was augmented to include misleading and control information, resulting in 4 groups: no-information control, Twitter's own misinformation warning (misinformation flag), social cue only, and combined misinformation flag and social cue. We tracked the content shared or liked by participants. Participants were provided with social information by referencing either their personal network on Twitter or all Twitter users. Results: A total of 1424 Twitter users participated in 3 studies (n=824, n=322, and n=278). Across all 3 studies, we found that social cues that reference users' personal network combined with a misinformation flag reduced the sharing of misleading but not control information and improved overall sharing quality. We show that this improvement could be driven by a change in injunctive social norms (study 2) but not social identity (study 3). Conclusions: Social reference cues combined with misinformation flags can significantly and meaningfully reduce the amount of COVID-19-related misinformation shared and improve overall sharing quality. They are a feasible and scalable way to effectively curb the sharing of COVID-19-related misinformation on social media.

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The German Research Community within ACM SIGCHI 2010 – 2020

2022-02-01 , Schöning, Johannes

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Multisensory Proximity and Transition Cues for Improving Target Awareness in Narrow Field of View Augmented Reality Displays

2021-11-01 , Trepkowski, Christina , Marquardt, Alexander , Eibich, Tom David , Shikanai, Yusuke , Maiero, Jens , Kiyokawa, Kiyoshi , Kruijff, Ernst , Schöning, Johannes , König, Peter

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A chronology of SIGCHI conferences: 1983 to 2022

2022-11-01 , Kumar, Near , Adams, Julie A. , Buxton, Bill , Candy, Linda , Cesar, Pablo , Leigh, Clark , Cowan, Benjamin R. , Dey, Anind , Toups, Phoebe O. , Edmonds, Ernest , Goodrich, Michael A. , Green, Mark , Grudin, Jonathan , Kitamura, Yoshifumi , Konstan, Joe , Latulipe, Celine , Minha, Lee , Malone, Tom , Mandryk, Regan , Markopoulos, Panos , Muller, Michael , Nacke, Lennart , Nakano, Yukiko , Obrist, Marianna , Porcheron, Martin , Sarcevic, Aleksandra , Schöning, Johannes , Scott, Stacey , Sharif, Bonita , Steinicke, Frank , Stumpf, Simone , Tse, Edward , Vinayagamoorthy, Vinoba

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Triggermuscle: Exploring Weight Perception for Virtual Reality Through Adaptive Trigger Resistance in a Haptic VR Controller

2022-01-14 , Stellmacher, Carolin , Bonfert, Michael , Kruijf, Ernst , Schöning, Johannes

It is challenging to provide users with a haptic weight sensation of virtual objects in VR since current consumer VR controllers and software-based approaches such as pseudo- haptics cannot render appropriate haptic stimuli. To overcome these limitations, we developed a haptic VR controller named Triggermuscle that adjusts its trigger resistance according to the weight of a virtual object. Therefore, users need to adapt their index finger force to grab objects of different virtual weights. Dynamic and continuous adjustment is enabled by a spring mechanism inside the casing of an HTC Vive controller. In two user studies, we explored the effect on weight perception and found large differences between participants for sensing change in trigger resistance and thus for discriminating virtual weights. The variations were easily distinguished and associated with weight by some participants while others did not notice them at all. We discuss possible limitations, confounding factors, how to overcome them in future research and the pros and cons of this novel technology.

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Crew time and workload in the EDEN ISS greenhouse in Antarctica

2021 , Zeidler, Conrad , Woeckner, Gerrit , Schöning, Johannes , Vrakking, Vincent , Zabel, Paul , Dorn, Markus , Schubert, Daniel , Steckelberg, Birgit , Stakemann, Josefine