Spiel, K. ., Bertel, S. ., & Kayali, F. . (2019). Adapting Gameplay to Eye Movements - An Exploration with TETRIS. In Extended Abstracts of the Annual Symposium on Computer-Human Interaction in Play Companion Extended Abstracts (S. 687–695). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3341215.3356267
Abstract
Gameplay experience is shaped by players expectations towards the game and how game features are presented to them. We created two modified versions of the classic TETRIS game: one that adapts game difficulty based on players performance and one that additionally adapts to players eye movements. An initial analysis of exploratory study results indicates that eye-movement-based adaptive difficulty in TETRIS might not affect player performance and that framing the use of adaptive difficulty might only have a limited influence on both players game experience and perceived competence.
Dohse, F. ., Nicolaisen, V. ., Wetzel, S. ., & Bertel, S. . (2019). Potential of AR for the Analysis and Training of Spatial Skills: A Case Study. In Proceedings of Mensch Und Computer 2019 (S. 537–541). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3340764.3344453
Abstract
Good spatial skills are of particular importance in STEM domains. For the training of spatial skills, smartphones provide a promising platform because of their high dissemination. Additionally, new frameworks make it easy to develop and use augmented reality (AR) contents. To examine the potential of AR for the training of spatial skills, we developed a prototype of a smartphone app for the solving of cross section tasks.The prototype was tested in a user study with 32 university students. It was compared against a second prototype with a classical Arcball interaction. For both prototypes, success rates were equally high. However, 3D-objects could be rotated faster using the AR-app. For the AR-app, participants reported higher scores regarding innovation and motivation but also for physical demands. This is especially interesting because motor activity and spatial skills are highly connected. Therefore, the physical approach might be promising for the development of spatial skill training apps which might lead to good long-term training results.
Wetzel, S. ., & Bertel, S. . (2018). Extraction of Time Dependent Physical Rotation Strategies. 14th biannual conference of the German Society for Cognitive Science, GK. Tübingen. Germany.
Fuchkina, E. ., Schneider, S. ., Bertel, S. ., & Osintseva, I. . (2018). Design Space Exploration Framework - A modular approach to flexibly explore large sets of design variants of parametric models within a single environment. Computing for a better tomorrow - the 36th eCAADe Conference. Lodz, Poland: Lodz University of Technology.
Abstract
Parametric modelling allows to relatively easily generate large sets of design variants (so called design space). Typically, a designer intuitively moves through this design space, resulting in one or several satisfying solutions. Due to the theoretically large number of variants that can be created with parametric models, obviously, there is a high probability that potentially good solutions could be missed, which is not at least because of human cognitive limitations. Consequently, it is necessary to develop a certain strategy to support designers in order to search for design solutions. Even though, various methods to systematically approach large data sets exist, the application of them in the design process is a special case, firstly, due to the existence of many non-specifiable and subjective dimensions (e.g. aesthetics) and secondly because of the multiple ways how designers actually search for solutions. This demands for a more flexible approach to design space exploration. This paper investigates how different methods can be combined to support the exploration of design spaces. Therefore, a conceptual framework with a modular architecture is proposed and its prototypical implementation is demonstrated.
von Jan, V. ., Bertel, S. ., & Hornecker, E. . (2018). Information Push and Pull in Tactile Pedestrian Navigation Support. In Proceedings of the 20th International Conference on Human-Computer Interaction with Mobile Devices and Services Adjunct (S. 55–62). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3236112.3236120
Abstract
For pedestrian navigation support, we report on how the feeling of being in control about receiving updates impacts navigation efficiency and user experience. In an exploratory field study, 24 participants navigated to previously unknown targets using a wristband which conveyed tactile information about targets bearing. Information was either pulled by the user at times of her choosing via a simple arm gesture, or was pushed by the armband at a regular, preset interval. While the push mode resulted in higher efficiency, more users preferred actively pulling information, possibly as this afforded feeling more in control. Interestingly, mode preference was independent of individual navigation ability. Results suggest that properties of the specific navigation context should be used to determine whether an interface offers push or pull modes for navigation support.
Zander, S. ., Yepes-Serna, V. ., Montag, M. ., Wetzel, S. ., & Bertel, S. . (2018). A gender issue? - Process measures while solving spatial tasks on mobile devices. EARLI SIG 27 Meeting (Online Measures of Education). Warszaw, Poland.
Wetzel, S. ., & Bertel, S. . (2018). A Comparison of Mental and Physical Rotation Using Gaze-Based Measures. Spatial Cognition XI. Tübingen. Germany: Springer International Publishing.
Abstract
Over the past few years, a number of studies have reported on procedural similarities and differences between mental rotation and physical (i.e., manual) rotation of Shepard and Metzler-type stimuli. These similarities include comparable angular disparity effects and comparable final angular offsets in problem solving. This paper presents results from further comparisons based on gazed-derived measures obtained across the course of trials. In a within-subject design, participants solved the same tasks as mental and as physical rotation problems. We compare time courses of mean fixation duration and of saccade amplitude, and interpret these with respect to underlying mental processes and loads. The results point to additional specific procedural similarities and differences, which nicely complement the previous findings. The results are of additional, practical use for establishing how and when physical rotation can provide a useful proxy for mental rotation for purposes of process analysis, of ability assessment, and of training.
Zander, S. ., Yepes-Serna, V. ., Montag, M. ., Wetzel, S. ., & Bertel, S. . (2018). A gender issue? - Analyzing individual differences while solving spatial tasks on mobile devices. EARLI SIG 6 & 7 Meeting (Technology-Enhanced Learning). Bonn, Germany.
Montag, M. ., Bertel, S. ., de Koning, B. B., & Zander, S. . (2018). The Powerbar - Effects of a ressource-restricting tool while solving spatial tasks on mobile devices. EARLI SIG 6 & 7 Meeting (Technology-Enhanced Learning). Bonn, Germany.