Paraskevi Kritopoulou, S. Manitsaris, A. Manitsaris
Movement-based interactive systems, and gesture recognition in general, can contribute to the human learning of motor skills. This paper presents the design and initial evaluation of a sensori-motor learning mechanism that provides on-line feedforward to the user when s/he repeats a gesture. This mechanism is based on real time statistical comparison between the input and reference gesture as well as on early motion planning principles that generate the feedforward. It has been implemented for improving the motor control in 2D sketching. 14 participants were appointed to evaluate whether this mechanism has the ability to impart motor skills.
{"title":"Evaluating an Early Motion Planning Feedforward Sensorimotor Mechanism for 2D Sketching","authors":"Paraskevi Kritopoulou, S. Manitsaris, A. Manitsaris","doi":"10.1145/3335082.3335089","DOIUrl":"https://doi.org/10.1145/3335082.3335089","url":null,"abstract":"Movement-based interactive systems, and gesture recognition in general, can contribute to the human learning of motor skills. This paper presents the design and initial evaluation of a sensori-motor learning mechanism that provides on-line feedforward to the user when s/he repeats a gesture. This mechanism is based on real time statistical comparison between the input and reference gesture as well as on early motion planning principles that generate the feedforward. It has been implemented for improving the motor control in 2D sketching. 14 participants were appointed to evaluate whether this mechanism has the ability to impart motor skills.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132280797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper will provide a three-part analysis to demonstrate that automated decision-making systems (ADMS), representing advanced technologies, can and do undermine our freedom. The analysis will assess their impact on our freedom with three perspectives of how freedom can be defined. Based on each perspective, the paper will address how the encroachment to our freedom can be mitigated, preserved or regained. The three-part analysis will focus on Charles Taylor’s concept of having autonomy to exercise control over one’s life; interference from the perspective of Philip Pettit’s concept of domination-antipower and Sharon Krause’s framing of the socially distributed character of human agency and how technological and human bias impacts freedom. This layered analysis captures the complex impact advanced technologies have on our freedom.
{"title":"How Freedom is Undermined by Advanced Technology and What to Do About It","authors":"Gerlinde Weger","doi":"10.1145/3335082.3335099","DOIUrl":"https://doi.org/10.1145/3335082.3335099","url":null,"abstract":"This paper will provide a three-part analysis to demonstrate that automated decision-making systems (ADMS), representing advanced technologies, can and do undermine our freedom. The analysis will assess their impact on our freedom with three perspectives of how freedom can be defined. Based on each perspective, the paper will address how the encroachment to our freedom can be mitigated, preserved or regained. The three-part analysis will focus on Charles Taylor’s concept of having autonomy to exercise control over one’s life; interference from the perspective of Philip Pettit’s concept of domination-antipower and Sharon Krause’s framing of the socially distributed character of human agency and how technological and human bias impacts freedom. This layered analysis captures the complex impact advanced technologies have on our freedom.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134400875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haptic VR systems exert dynamically varying forces on virtually embodied users. VR approaches have always presented ergonomic challenges, but the emergence of adaptive haptics makes it increasingly difficult to maintain good posture. We look at the example of pushing a virtual shopping cart to explore relationships that exist between posture and adaptive haptics. Two experimental studies demonstrate (1) a direct effect of adaptive haptics on poor posture; and (2) that real-time feedback improves posture, even under significant dynamic musculoskeletal loading. Our findings suggest it is important to incorporate posture feedback in haptic VR design, and we also show that the resulting good posture extends beyond feedback.
{"title":"CartRight: Maintaining Good Posture in the Presence of Adaptive Haptics","authors":"Joey Campbell, Mike Fraser","doi":"10.1145/3335082.3335088","DOIUrl":"https://doi.org/10.1145/3335082.3335088","url":null,"abstract":"Haptic VR systems exert dynamically varying forces on virtually embodied users. VR approaches have always presented ergonomic challenges, but the emergence of adaptive haptics makes it increasingly difficult to maintain good posture. We look at the example of pushing a virtual shopping cart to explore relationships that exist between posture and adaptive haptics. Two experimental studies demonstrate (1) a direct effect of adaptive haptics on poor posture; and (2) that real-time feedback improves posture, even under significant dynamic musculoskeletal loading. Our findings suggest it is important to incorporate posture feedback in haptic VR design, and we also show that the resulting good posture extends beyond feedback.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121742210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study a naturalistic observation followed by a qualitative content analysis of four guided tours in the Acropolis Slopes’ gallery, of the Acropolis museum, was conducted for examining (i) to what degree do guides structure their narratives on a per exhibit basis, and if so (ii) to what extent is the wider storyline built upon the successive examination of exhibits. The two research questions stem from the design issues recognised in the realm of digital storytelling, namely, to provide seamless transition among various exhibits without causing either story incoherence or museum fatigue. To this end, two researchers acting as visitors arranged four private guided tours at the Acropolis Museum, i.e., two licensed tourist guides and two professors in archaeology. Results showed that although it is possible for some guides (i.e. archaeologists) to unfold their narratives based on exhibits per se, a superior practice was observed by the licensed tour guides entailing narratives that unify many exhibits under a particular perspective (e.g. how the ancient people were related with the exhibits). The above results are discussed under the scope of digital storytelling design.
{"title":"Narrative Structure of Museum Guided Tours","authors":"V. Papakostopoulos, Anna Vaptisma, D. Nathanael","doi":"10.1145/3335082.3335095","DOIUrl":"https://doi.org/10.1145/3335082.3335095","url":null,"abstract":"In this study a naturalistic observation followed by a qualitative content analysis of four guided tours in the Acropolis Slopes’ gallery, of the Acropolis museum, was conducted for examining (i) to what degree do guides structure their narratives on a per exhibit basis, and if so (ii) to what extent is the wider storyline built upon the successive examination of exhibits. The two research questions stem from the design issues recognised in the realm of digital storytelling, namely, to provide seamless transition among various exhibits without causing either story incoherence or museum fatigue. To this end, two researchers acting as visitors arranged four private guided tours at the Acropolis Museum, i.e., two licensed tourist guides and two professors in archaeology. Results showed that although it is possible for some guides (i.e. archaeologists) to unfold their narratives based on exhibits per se, a superior practice was observed by the licensed tour guides entailing narratives that unify many exhibits under a particular perspective (e.g. how the ancient people were related with the exhibits). The above results are discussed under the scope of digital storytelling design.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124274246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Kalakoski, A. Henelius, Emilia Oikarinen, Antti Ukkonen, K. Puolamäki
Today's ever-increasing amount of data places new demands on cognitive ergonomics and requires new design ideas to ensure successful human–data interaction. Our aim is to identify the cognitive factors that require attention when designing systems to improve decision-making based on large amounts of data. We designed an experiment that simulates the typical cognitive demands people encounter in data analysis situations. We demonstrate some essential cognitive limitations using a behavioural experiment with 20 participants. The studied task presented the participants with critical and noncritical attributes that contained information on two groups of people. They had to select the response option (group) with a higher frequency of critical attributes. The results showed that accuracy of judgement decreased as the amount of information increased, and that judgement was affected by irrelevant information. Our results thus demonstrate critical cognitive limitations when people utilise data and suggest a cognitive bias in data-based decision-making. Therefore, when designing for cognition, we should consider the human cognitive limitations that are manifested in a data analysis context and develop general cognitive ergonomics guidelines for design to support the utilisation of data and improve data-based decision-making.
{"title":"Cognitive ergonomics for data analysis","authors":"V. Kalakoski, A. Henelius, Emilia Oikarinen, Antti Ukkonen, K. Puolamäki","doi":"10.1145/3335082.3335112","DOIUrl":"https://doi.org/10.1145/3335082.3335112","url":null,"abstract":"Today's ever-increasing amount of data places new demands on cognitive ergonomics and requires new design ideas to ensure successful human–data interaction. Our aim is to identify the cognitive factors that require attention when designing systems to improve decision-making based on large amounts of data. We designed an experiment that simulates the typical cognitive demands people encounter in data analysis situations. We demonstrate some essential cognitive limitations using a behavioural experiment with 20 participants. The studied task presented the participants with critical and noncritical attributes that contained information on two groups of people. They had to select the response option (group) with a higher frequency of critical attributes. The results showed that accuracy of judgement decreased as the amount of information increased, and that judgement was affected by irrelevant information. Our results thus demonstrate critical cognitive limitations when people utilise data and suggest a cognitive bias in data-based decision-making. Therefore, when designing for cognition, we should consider the human cognitive limitations that are manifested in a data analysis context and develop general cognitive ergonomics guidelines for design to support the utilisation of data and improve data-based decision-making.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"671 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125388797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent years, electronic paper – a display technology known for its low power consumption and paper-like appearance has started emerging in several consumer products, replacing reading and writing on regular paper to some extent. In this paper, the capabilities of electronic ink technology is evaluated in the context of drawing and note taking. Our tests were done by letting test participants use two different tablet devices as replacements for daily activities that usually require pen and paper; the reMarkable, using an electronic ink display, and the Apple iPad, using an LCD screen. The results from the tests showed that for writing, the reMarkable was superior to the iPad, although insufficient when it comes to software and user experience. This shows that the nature of tasks performed throughout a day benefits from a less niched, more do-all device such as an iPad. In summary, the results from this evaluation shows that while the technology has come a long way mimicking the look and feel of paper, integrating electronic paper technology into a tablet in this case demands a little too much of the technology itself. Ultimately, electronic paper still has some way to go before being the go to paper replacement that has been long sought after.
{"title":"Evaluating Electronic Ink Display Technology for Use in Drawing and Note Taking","authors":"Ulrik Söderström, Måns Hellgren, Thomas Mejtoft","doi":"10.1145/3335082.3335105","DOIUrl":"https://doi.org/10.1145/3335082.3335105","url":null,"abstract":"In recent years, electronic paper – a display technology known for its low power consumption and paper-like appearance has started emerging in several consumer products, replacing reading and writing on regular paper to some extent. In this paper, the capabilities of electronic ink technology is evaluated in the context of drawing and note taking. Our tests were done by letting test participants use two different tablet devices as replacements for daily activities that usually require pen and paper; the reMarkable, using an electronic ink display, and the Apple iPad, using an LCD screen. The results from the tests showed that for writing, the reMarkable was superior to the iPad, although insufficient when it comes to software and user experience. This shows that the nature of tasks performed throughout a day benefits from a less niched, more do-all device such as an iPad. In summary, the results from this evaluation shows that while the technology has come a long way mimicking the look and feel of paper, integrating electronic paper technology into a tablet in this case demands a little too much of the technology itself. Ultimately, electronic paper still has some way to go before being the go to paper replacement that has been long sought after.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130162376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Robin Turkington, M. Mulvenna, R. Bond, S. O’neill, C. Armour
Clustering analysis, or clustering, is an activity which can be applied to user event log data to determine the types of users which exist within a service, and can be used to gain insights into the client base by their behaviour. However, when applied to longitudinal user event log data, clustering can potentially misclassify regular users as ’one-off’ if their last interaction within their tenure of the service appears at the beginning of the observable data set. The main objective of this study was to investigate whether any impact of user tenure within longitudinal data on k-means clustering accuracy would occur. The current paper subjected a large telephony call log data set from a helpline to a k-means clustering algorithm to determine the types of callers that contact the helpline based on their usage characteristics (number of calls, mean duration of calls and variability of call duration). A threshold of one-month increments were applied to the data (callers appearing before the threshold but not after were removed each time) and then subsequently subjected to k-means clustering. Results showed that cluster structures remained stable after each threshold condition. Significant differences in cluster centers were found in one cluster across tenure conditions.
{"title":"User Archetype Discovery By Cluster Analysis of Caller Log Data: Tenure Evolution is Stable as Time Period Reduces","authors":"Robin Turkington, M. Mulvenna, R. Bond, S. O’neill, C. Armour","doi":"10.1145/3335082.3335090","DOIUrl":"https://doi.org/10.1145/3335082.3335090","url":null,"abstract":"Clustering analysis, or clustering, is an activity which can be applied to user event log data to determine the types of users which exist within a service, and can be used to gain insights into the client base by their behaviour. However, when applied to longitudinal user event log data, clustering can potentially misclassify regular users as ’one-off’ if their last interaction within their tenure of the service appears at the beginning of the observable data set. The main objective of this study was to investigate whether any impact of user tenure within longitudinal data on k-means clustering accuracy would occur. The current paper subjected a large telephony call log data set from a helpline to a k-means clustering algorithm to determine the types of callers that contact the helpline based on their usage characteristics (number of calls, mean duration of calls and variability of call duration). A threshold of one-month increments were applied to the data (callers appearing before the threshold but not after were removed each time) and then subsequently subjected to k-means clustering. Results showed that cluster structures remained stable after each threshold condition. Significant differences in cluster centers were found in one cluster across tenure conditions.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124999421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study evaluates how Generation Y, also known as millennials, perceive different web design approaches. Two web design approaches were compared, using methods in User Experience design. The first approach is minimalism and the second one is maximalism. Minimalism has been a recurring web design trend ever since the end of the twentieth century. Maximalism is claimed to be the most important web design trend of 2018. The interesting question is if millennials who have grown up with minimalism in web design are interested in a new approach – the maximal approach. This study probe the opinions, thoughts and emotions of millennials after they have browsed two websites, one developed with minimalism and one developed with maximalism. The results show that the participants in this study were more exited by the maximal design. However, combining quantitative and qualitative data, the conclusion is that the different design approaches are more or less suitable to use depending on the message that the website is supposed to convey.
{"title":"Comparing Millennials View on Minimalism And Maximalism in Web Design","authors":"Ulrik Söderström, L. Carlsson, Thomas Mejtoft","doi":"10.1145/3335082.3335104","DOIUrl":"https://doi.org/10.1145/3335082.3335104","url":null,"abstract":"This study evaluates how Generation Y, also known as millennials, perceive different web design approaches. Two web design approaches were compared, using methods in User Experience design. The first approach is minimalism and the second one is maximalism. Minimalism has been a recurring web design trend ever since the end of the twentieth century. Maximalism is claimed to be the most important web design trend of 2018. The interesting question is if millennials who have grown up with minimalism in web design are interested in a new approach – the maximal approach. This study probe the opinions, thoughts and emotions of millennials after they have browsed two websites, one developed with minimalism and one developed with maximalism. The results show that the participants in this study were more exited by the maximal design. However, combining quantitative and qualitative data, the conclusion is that the different design approaches are more or less suitable to use depending on the message that the website is supposed to convey.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131137321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
My main research question is how adaptive automation through interactive visualization can be used to improve human-automation collaboration. The research is performed in a cross-domain project including air traffic control, train control, and vessel traffic service, where I mainly focus at air traffic control. All domains are safety critical, include highly complex control room environments, and are facing increasing automation with thereby associated challenges. Adaptive automation by sensing the operator is one approach to mitigate potential automation problems. The first studies will be performed using a prototype with a graphical representation of an automated conflict detection tool where the operator gets visual attention support based on eye tracker data. Different concepts of information visualization feedback will be explored. A literature review on adaptive automation indicated that the projects approach is novel in its combination of adaptive automation, information visualization, and by its cross-domain nature. Finding the best ways of taking advantage of the cross-domain approach, how to get access to operative environments and operators, and how to find effective, yet unobtrusive, sensors are some of the identified challenges.
{"title":"Adaptive Automation through Interactive Visualization","authors":"Magnus Nylin","doi":"10.1145/3335082.3335123","DOIUrl":"https://doi.org/10.1145/3335082.3335123","url":null,"abstract":"My main research question is how adaptive automation through interactive visualization can be used to improve human-automation collaboration. The research is performed in a cross-domain project including air traffic control, train control, and vessel traffic service, where I mainly focus at air traffic control. All domains are safety critical, include highly complex control room environments, and are facing increasing automation with thereby associated challenges. Adaptive automation by sensing the operator is one approach to mitigate potential automation problems. The first studies will be performed using a prototype with a graphical representation of an automated conflict detection tool where the operator gets visual attention support based on eye tracker data. Different concepts of information visualization feedback will be explored. A literature review on adaptive automation indicated that the projects approach is novel in its combination of adaptive automation, information visualization, and by its cross-domain nature. Finding the best ways of taking advantage of the cross-domain approach, how to get access to operative environments and operators, and how to find effective, yet unobtrusive, sensors are some of the identified challenges.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132051859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dannie Korsgaard, Thomas Bjørner, P. K. Sørensen, J. Bruun-Pedersen
This study used augmented virtuality with an overall aim to prevent undernourishment among older adults. The purpose was to facilitate remote social eating for solitary older adults, as people tend to eat more when socializing. In this study, an augmented virtuality application was developed in which a physical cake buffet and a virtual living room coexisted and interacted in real time. This was possible using an Oculus Rift CV1 HMD with an Intel Realsense SR300 depth sensor mounted on top of the HMD. The study included initial workshops with 30 experts and 16 older adults, prototyping with 7 mobility-restricted older adults, and a final user study with 27 older adults. In the user study, we evaluated the user experience of a system designed to establish a meal conversation between three older friends while eating a solitary meal in augmented virtuality. Within three overall factors (user, context, and system), we outlined sub- elements that constituted both opportunities and limitations, which included interactions, perceptions, and behavior in the augmented virtuality. The virtual living room was described very positively by all participants. However, there were also some technological limitations in terms of fidelity, HMD comfort, and quality. When developing virtual environments, we found it very important to include very specific elements within the user, contextual and system categories, as well including qualitative methods throughout the entire design process.
{"title":"Older adults eating together in a virtual living room: opportunities and limitations of eating in augmented virtuality","authors":"Dannie Korsgaard, Thomas Bjørner, P. K. Sørensen, J. Bruun-Pedersen","doi":"10.1145/3335082.3335093","DOIUrl":"https://doi.org/10.1145/3335082.3335093","url":null,"abstract":"This study used augmented virtuality with an overall aim to prevent undernourishment among older adults. The purpose was to facilitate remote social eating for solitary older adults, as people tend to eat more when socializing. In this study, an augmented virtuality application was developed in which a physical cake buffet and a virtual living room coexisted and interacted in real time. This was possible using an Oculus Rift CV1 HMD with an Intel Realsense SR300 depth sensor mounted on top of the HMD. The study included initial workshops with 30 experts and 16 older adults, prototyping with 7 mobility-restricted older adults, and a final user study with 27 older adults. In the user study, we evaluated the user experience of a system designed to establish a meal conversation between three older friends while eating a solitary meal in augmented virtuality. Within three overall factors (user, context, and system), we outlined sub- elements that constituted both opportunities and limitations, which included interactions, perceptions, and behavior in the augmented virtuality. The virtual living room was described very positively by all participants. However, there were also some technological limitations in terms of fidelity, HMD comfort, and quality. When developing virtual environments, we found it very important to include very specific elements within the user, contextual and system categories, as well including qualitative methods throughout the entire design process.","PeriodicalId":279162,"journal":{"name":"Proceedings of the 31st European Conference on Cognitive Ergonomics","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116357041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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