Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.
© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 04. Juni 2021)
1Nakayama, S. ; Tolbert, T.J. ; Nov, O. ; Porfiri, M.: Social information as a means to enhance engagement in citizen science-based telerehabilitation.
In: Journal of the Association for Information Science and Technology. 70(2019) no.6, S.587-595.
Abstract: Advancements in computer-mediated exercise put forward the feasibility of telerehabilitation, but it remains a challenge to retain patients' engagement in exercises. Building on our previous study demonstrating enhanced engagement in citizen science through social information about others' contributions, we propose a novel framework for effective telerehabilitation that integrates citizen science and social information into physical exercise. We hypothesized that social information about others' contributions would augment engagement in physical activity by encouraging people to invest more effort toward discovery of novel information in a citizen science context. We recruited healthy participants to monitor the environment of a polluted canal by tagging images using a haptic device toward gathering environmental information. Along with the images, we displayed the locations of the tags created by the previous participants. We found that participants increased both the amount and duration of physical activity when presented with a larger number of the previous tags. Further, they increased the diversity of tagged objects by avoiding the locations tagged by the previous participants, thereby generating richer information about the environment. Our results suggest that social information is a viable means to augment engagement in rehabilitation exercise by incentivizing the contribution to scientific activities.
Inhalt: Vgl.: https://onlinelibrary.wiley.com/doi/10.1002/asi.24147.
2Laut, J. ; Cappa, F. ; Nov, O. ; Porfiri, M.: Increasing citizen science contribution using a virtual peer.
In: Journal of the Association for Information Science and Technology. 68(2017) no.3, S.583-593.
Abstract: Online participation is becoming an increasingly common means for individuals to contribute to citizen science projects, yet such projects often rely on only a small fraction of participants to make the majority of contributions. Here, we investigate a means for influencing the performance of citizen scientists toward enhancing overall participation. Building on past social comparison research, we pair citizen scientists with a software-based virtual peer in an environmental monitoring project. Through a series of experiments in which virtual peers outperform, underperform, or perform similarly to human participants, we investigate the influence of their presence on citizen science participation. To offer insight into the psychological determinants to the response to this intervention, we propose a new dynamic model describing the bidirectional interaction between humans and virtual peers. Our results demonstrate that participant contribution can be enhanced through the presence of a virtual peer, creating a feedback loop where participants tend to increase or decrease their contribution in response to their peers' performance. By including virtual peers that systematically outperform the participants, we demonstrate a fourfold increase in their contribution to the citizen science project.
Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23685/full.
3Gunaratne, J. ; Nov, O.: Using interactive "Nutrition labels" for financial products to assist decision making under uncertainty.
In: Journal of the Association for Information Science and Technology. 68(2017) no.8, S.1836-1849.
Abstract: Product information labels can help users understand complex information, leading them to make better decisions. One area where consumers are particularly prone to make costly decision-making errors is long-term saving, which requires understanding of complex concepts such as uncertainty and trade-offs. Although most people are poorly equipped to deal with such concepts, interactive design can potentially help users make better decisions. We developed an interactive information label to assist consumers with retirement saving decision-making. To evaluate it, we exposed 450 users to one of four user interface conditions in a retirement saving simulator where they made 35 yearly decisions under changing circumstances. We found a significantly better ability of users to reach their goals with the information label. Furthermore, users who interacted with the label made better decisions than those who were presented with a static information label. Lastly, we found the label particularly effective in helping novice savers.
Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23844/full.
4Nov, O. ; Laut, J. ; Porfiri, M.: Using targeted design interventions to encourage extra-role crowdsourcing behavior.
In: Journal of the Association for Information Science and Technology. 67(2016) no.2, S.483-489.
Abstract: Crowdsourcing has seen a substantial increase in interest from researchers and practitioners in recent years. Being a new form of work facilitated by information technology, the rise of crowdsourcing calls for the development of new theoretical insights. Our focus in this article is on extra-role behavior-employees' voluntary activities, which are not part of their prescribed duties. Specifically, we explored how user interface design can help increase extra-role behavior among crowdsourcing workers. In a randomized experiment, we examined the joint effects of the presentation of a performance display to crowdsourcing workers and the personal attributes of these workers on the workers' likelihood to engage in extra-role behavior. The experimental setting included an image analysis task performed on an environmental monitoring website. We compared workers' behavior across the different experimental conditions and found that the interaction between the presence of a performance display and the workers' personality trait of curiosity has a significant impact on the likelihood of engaging in extra-role behavior. In particular, the presence of a performance display was associated with increased likelihood of extra-role behavior among low-curiosity workers, and no change in extra-role behavior was observed among high-curiosity users. Implications for design are discussed.
Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23507/abstract.
5Arazy, O. ; Gellatly, I. ; Brainin, E. ; Nov, O.: Motivation to share knowledge using wiki technology and the moderating effect of role perceptions.
In: Journal of the Association for Information Science and Technology. 67(2016) no.10, S.2362-2378.
Abstract: One of the key challenges for innovation and technology-mediated knowledge collaboration within organizational settings is motivating contributors to share their knowledge. Drawing upon self-determination theory, we investigate 2 forms of motivation: internally driven (autonomous motivation) and externally driven (controlled motivation). Knowledge sharing could be viewed as a required in-role activity or as discretionary extra-role behavior. In this study, we examine the moderating effect of role perceptions on the relations between each of the two motivational constructs and knowledge sharing, paying particular attention to the affordances of the enabling information technology. An analysis of survey data from a wiki-based organizational encyclopedia in a large, multinational firm reveals that when contributors' motivation is externally driven, they are more likely to share knowledge if this activity is viewed as in-role behavior. However, when contributors' motivation is internally driven, they are more likely to participate in knowledge sharing when this activity is viewed as extra-role behavior. Theoretical and practical implications are discussed.
Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23579/full.
6Arazy, O. ; Yeo, L. ; Nov, O.: Stay on the Wikipedia task : when task-related disagreements slip into personal and procedural conflicts.
In: Journal of the American Society for Information Science and Technology. 64(2013) no.8, S.1634-1648.
Abstract: In Wikipedia, volunteers collaboratively author encyclopedic entries, and therefore managing conflict is a key factor in group success. Behavioral research describes 3 conflict types: task-related, affective, and process. Affective and process conflicts have been consistently found to impede group performance; however, the effect of task conflict is inconsistent. We propose that these inconclusive results are due to underspecification of the task conflict construct, and focus on the transition phase where task-related disagreements escalate into affective and process conflict. We define these transitional phases as distinct constructs-task-affective and task-process conflict-and develop a theoretical model that explains how the various task-related conflict constructs, together with the composition of the wiki editor group, determine the quality of the collaboratively authored wiki article. Our empirical study of 96 Wikipedia articles involved multiple data-collection methods, including analysis of Wikipedia system logs, manual content analysis of articles' discussion pages, and a comprehensive assessment of articles' quality using the Delphi method. Our results show that when group members' disagreements-originally task related-escalate into personal attacks or hinge on procedure, these disagreements impede group performance. Implications for research and practice are discussed.
7Nov, O. ; Schecter, W.: Dispositional resistance to change and hospital physicians' use of electronic medical records : a multidimensional perspective.
In: Journal of the American Society for Information Science and Technology. 63(2012) no.4, S.648-656.
Abstract: Although electronic medical records (EMR) adoption by health care organizations has been widely studied, little is known about the determinants of EMR individual use by physicians after institutional adoption has taken place. In this study, the determinants of inpatient physicians' continuous use of EMR were studied. Four dimensions of EMR use were analyzed: use intensity, use extent, use frequency, and use scope. A web-based survey was administered to physicians at a large university hospital; respondents filled out a survey with questions relating to their EMR use, attitude, beliefs, work style, and dispositional resistance to change. Structural equation modeling was carried out to analyze the relationship between these factors. Physicians were found to differ substantially in the scope, extent, and intensity of their EMR use. Their attitude toward EMR use was associated with all use dimensions. Dispositional resistance to change was negatively related to perceived ease of use and with perceived usefulness both directly and through the mediation of compatibility with preferred work style. Time loss was negatively related to both perceived usefulness and attitude toward EMR use. Implications for research and practice are discussed.
8Nov, O. ; Naaman, M. ; Ye, C.: Analysis of participation in an online photo-sharing community : a multidimensional perspective.
In: Journal of the American Society for Information Science and Technology. 61(2010) no.3, S.555-566.
Abstract: In recent years we have witnessed a significant growth of social-computing communities - online services in which users share information in various forms. As content contributions from participants are critical to the viability of these communities, it is important to understand what drives users to participate and share information with others in such settings. We extend previous literature on user contribution by studying the factors that are associated with various forms of participation in a large online photo-sharing community. Using survey and system data, we examine four different forms of participation and consider the differences between these forms. We build on theories of motivation to examine the relationship between users' participation and their motivations with respect to their tenure in the community. Amongst our findings, we identify individual motivations (both extrinsic and intrinsic) that underpin user participation, and their effects on different forms of information sharing; we show that tenure in the community does affect participation, but that this effect depends on the type of participation activity. Finally, we demonstrate that tenure in the community has a weak moderating effect on a number of motivations with regard to their effect on participation. Directions for future research, as well as implications for theory and practice, are discussed.
Themenfeld: Social tagging ; Internet
Behandelte Form: Bilder
9Nov, O. ; Ye, C.: Resistance to change and the adoption of digital libraries : an integrative model.
In: Journal of the American Society for Information Science and Technology. 60(2009) no.8, S.1702-1708.
Abstract: In this paper we extend earlier work on the role of the personality trait of resistance to change (RTC) in the adoption of digital libraries. We present an integrative study, drawing on a number of research streams, including IT adoption, social psychology, and digital-library acceptance. Using structural equation modeling, we confirm RTC as a direct antecedent of effort expectancy. In addition, we also find that by affecting computer anxiety and result demonstrability, RTC acts as an indirect antecedent to both effort expectancy and performance expectancy, which in turn determine user intention to adopt digital library technology. Implications for research and practice are discussed.
10Oded Nov, O. ; Chen Ye, C.: Users' personality and perceived ease of use of digital libraries : the case for resistance to change.
In: Journal of the American Society for Information Science and Technology. 59(2008) no.5, S.845-851.
Abstract: The use of digital libraries has seen steady growth in the past two decades. However, as with other new technologies, effective use of digital libraries depends on user acceptance, which in turn is affected by users' perception of the system's ease of use. Since the introduction of new technologies often involves some form of change for users, the recent identification of the resistance to change (RTC) personality trait, and the development of a scale to measure it, provides an opportunity to assess the impact of RTC on new users of a digital library system. Drawing on prior research focused on personal differences and system characteristics as determinants of perceived ease of use, in the present study we explore the relationship between RTC and perceived ease of use of a university digital library. The results of a survey of 170 new users of the library system suggest that RTC is a significant determinant of perceived ease of use, and improves the explanatory power of previous technology-acceptance models. Implications of the findings are discussed.