Sheizaf Rafaeli
Biographic Data
| ID | 245148 |
|---|---|
| NAME | Sheizaf Rafaeli |
| GIVEN NAMES | Sheizaf |
| FAMILY NAME | Rafaeli |
| SIGNATURE | RAFAELI S |
| AFFILIATIONS | University of Haifa |
| ORCID | 0000-0002-0937-5621 |
| VERIFIED | Yes |
| TOTAL WORKS | 17 |
| TOTAL CITATIONS | 86 |
| AUTHOR COUNT | 17 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1996 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 4 |
Fewer but More Elaborate
Information accessibility in journalism operates along two dimensions that may work against each other: increasing information availability raises what news stories offer audiences, while simultaneously elevating the cognitive demands that determine whether audiences can use it. To test whether this gap functions as a participation filtering mechanism, we examine how four informational features, namely statistical information, external sources, d…
Data, Sense, and Sensibility
Data journalism (DJ) seeks to enhance audience comprehension and engagement by integrating statistical information, diverse sources, data visualizations, and journalistic style. However, the way DJ stories are framed—whether through an analytic approach that prioritizes precision or an affective approach that emphasizes emotional engagement—may shape audience interactivity in distinct ways. This study examines how journalistic style influences au…
Non-Take-Up of Benefits and Rights
The present study adds valuable perspective to the ongoing theoretical and practical universality-selectivity debate in the context of (non-) take-up of benefits by delving into the online information angle. People with a digital divide may be affected by such differences since they are more likely to need selective benefits. Almost all researchers agree that knowledge is a crucial barrier to benefits take-up. However, most researchers place the …
Blurring the boundaries between domestic and digital spheres
This study explores the phenomenon of multiactivity during recreational video-mediated communication (VMC) through the analysis of competing engagements. From a data corpus of naturally occurring interactions in public Google Hangouts, we focus on instances of competing engagements triggered by the co-presence of unratified participants in broadcasters’ physical environments. As users are immersed in their everyday spaces, interferences from thei…
Independence Through Data Journalism
Data journalism (DJ) fosters audience independence. It encourages content exploration through visualizations, storytelling, and direct access to data sources. DJ assists the audience to be well informed, cognitively active, and contribute to the public sphere. Achieving this objective indicates the audience's independence. How independent is the audience of DJ? This question is answered based on the level of engagement of the audience. A low leve…
How ‘Networked’ are Online Collaborative Concept-Maps? Introducing Metrics for Quantifying and Comparing the ‘Networkedness’ of Collaboratively Constructed Content
With the growing role of online multi-participant collaborations in shaping the academic, professional, and civic spheres, incorporating collaborative online practices in educational settings has become imperative. As more educators include such practices in their curricula, they are faced with new challenges. Assessment of collaborations, especially in larger groups, is particularly challenging. Assessing the quality of the collaborative “though…
A Conceptual Framework for Visualizing Composite Indicators
Gamifying with badges
Badges are a common gamification mechanism used by many crowd-sourced online systems. This study provides evidence to their effectiveness and measures their effect size using a big data natural experiment in three large Stack Exchange online Q&A sites. We analyze the introduction of 22 different badge-launch events and the resulting changes in user behavior. Consistent with earlier studies, we report that most badge introductions have the desired…
Participation frameworks in multiparty video chats cross-modal exchanges in public Google Hangouts
Active players in a network tell the story
One of the methodological and logistic problems of network research is the challenge of big data. Dynamics and network qualities are not as easy to extrapolate as averages and distributions. The numbers are huge, and traditional sampling doesn’t solve the problem. What if, by using a small sub–group of the members of a population, we could understand the nature of the network connecting them? For instance, what if we could draw network analysis c…
Assessing interactivity in computer-mediated research
Interactivity is not unique to computers or networks and cannot be reserved solely for the discussion of so-called ‘New Media’. Restricting analysis of interactivity to the domain of computerized and new technology alone problematizes comparisons with traditional media as well as with further developments of the new media. This article begins by reviewing some of the leading definitions and by highlighting the primary conceptual development of in…
Why Communication Researchers Should Study the Internet
Networked Interactivity
What makes computer-mediated groups tick and/or stick? To what degree are computer-mediated discussants really sustained “groups”? Does the grouping quality reflect anything beyond technical structure? Are technical structure and grouping related? How do threads define groups, or vice-versa? Does any of this change between academic and commercial networks
Pauses and Response Latencies
This study examines the chronemics of response latencies in asynchronous computer-mediated communication (CMC) by analyzing three datasets comprising a total of more than 150,000 responses: email responses created by corporate employees, responses created by university students in course discussion groups, and responses to questions posted in a public, commercial online information market. Mathematical analysis of response latencies reveals a nor…
Information Overload and the Message Dynamics of Online Interaction Spaces
Online spaces that enable shared public interpersonal communications are of significant social, organizational, and economic importance. In this paper, a theoretical model and associated unobtrusive method are proposed for researching the relationship between online spaces and the behavior they host. The model focuses on the collective impact that individual information-overload coping strategies have on the dynamics of open, interactive public o…
Asynchronous discussion groups as Small World and Scale Free Networks
What is the network form of online discussion groups? What are the topological parameters delineating the interaction on such groups? We report an empirical examination of the form of online discussion groups. We are interested in examining whether such groups conform to the Small World and the Scale Free models of networks. Support for these expectations provides a formal expression of growth, survival potential and preferential attachment in th…
Why Communication Researchers Should Study the Internet
Networked Interactivity
What makes computer-mediated groups tick and/or stick? To what degree are computer-mediated discussants really sustained “groups”? Does the grouping quality reflect anything beyond technical structure? Are technical structure and grouping related? How do threads define groups, or vice-versa? Does any of this change between academic and commercial networks
Participation frameworks in multiparty video chats cross-modal exchanges in public Google Hangouts
Why Communication Researchers Should Study the Internet
Pauses and Response Latencies
This study examines the chronemics of response latencies in asynchronous computer-mediated communication (CMC) by analyzing three datasets comprising a total of more than 150,000 responses: email responses created by corporate employees, responses created by university students in course discussion groups, and responses to questions posted in a public, commercial online information market. Mathematical analysis of response latencies reveals a nor…
A Conceptual Framework for Visualizing Composite Indicators
Non-Take-Up of Benefits and Rights
The present study adds valuable perspective to the ongoing theoretical and practical universality-selectivity debate in the context of (non-) take-up of benefits by delving into the online information angle. People with a digital divide may be affected by such differences since they are more likely to need selective benefits. Almost all researchers agree that knowledge is a crucial barrier to benefits take-up. However, most researchers place the …
Why Communication Researchers Should Study the Internet
Information Overload and the Message Dynamics of Online Interaction Spaces
Online spaces that enable shared public interpersonal communications are of significant social, organizational, and economic importance. In this paper, a theoretical model and associated unobtrusive method are proposed for researching the relationship between online spaces and the behavior they host. The model focuses on the collective impact that individual information-overload coping strategies have on the dynamics of open, interactive public o…
Asynchronous discussion groups as Small World and Scale Free Networks
What is the network form of online discussion groups? What are the topological parameters delineating the interaction on such groups? We report an empirical examination of the form of online discussion groups. We are interested in examining whether such groups conform to the Small World and the Scale Free models of networks. Support for these expectations provides a formal expression of growth, survival potential and preferential attachment in th…
Why Communication Researchers Should Study the Internet
Networked Interactivity
What makes computer-mediated groups tick and/or stick? To what degree are computer-mediated discussants really sustained “groups”? Does the grouping quality reflect anything beyond technical structure? Are technical structure and grouping related? How do threads define groups, or vice-versa? Does any of this change between academic and commercial networks
Pauses and Response Latencies
This study examines the chronemics of response latencies in asynchronous computer-mediated communication (CMC) by analyzing three datasets comprising a total of more than 150,000 responses: email responses created by corporate employees, responses created by university students in course discussion groups, and responses to questions posted in a public, commercial online information market. Mathematical analysis of response latencies reveals a nor…
Assessing interactivity in computer-mediated research
Interactivity is not unique to computers or networks and cannot be reserved solely for the discussion of so-called ‘New Media’. Restricting analysis of interactivity to the domain of computerized and new technology alone problematizes comparisons with traditional media as well as with further developments of the new media. This article begins by reviewing some of the leading definitions and by highlighting the primary conceptual development of in…
Active players in a network tell the story
One of the methodological and logistic problems of network research is the challenge of big data. Dynamics and network qualities are not as easy to extrapolate as averages and distributions. The numbers are huge, and traditional sampling doesn’t solve the problem. What if, by using a small sub–group of the members of a population, we could understand the nature of the network connecting them? For instance, what if we could draw network analysis c…
Participation frameworks in multiparty video chats cross-modal exchanges in public Google Hangouts
Gamifying with badges
Badges are a common gamification mechanism used by many crowd-sourced online systems. This study provides evidence to their effectiveness and measures their effect size using a big data natural experiment in three large Stack Exchange online Q&A sites. We analyze the introduction of 22 different badge-launch events and the resulting changes in user behavior. Consistent with earlier studies, we report that most badge introductions have the desired…
A Conceptual Framework for Visualizing Composite Indicators
How ‘Networked’ are Online Collaborative Concept-Maps? Introducing Metrics for Quantifying and Comparing the ‘Networkedness’ of Collaboratively Constructed Content
With the growing role of online multi-participant collaborations in shaping the academic, professional, and civic spheres, incorporating collaborative online practices in educational settings has become imperative. As more educators include such practices in their curricula, they are faced with new challenges. Assessment of collaborations, especially in larger groups, is particularly challenging. Assessing the quality of the collaborative “though…
Independence Through Data Journalism
Data journalism (DJ) fosters audience independence. It encourages content exploration through visualizations, storytelling, and direct access to data sources. DJ assists the audience to be well informed, cognitively active, and contribute to the public sphere. Achieving this objective indicates the audience's independence. How independent is the audience of DJ? This question is answered based on the level of engagement of the audience. A low leve…
Blurring the boundaries between domestic and digital spheres
This study explores the phenomenon of multiactivity during recreational video-mediated communication (VMC) through the analysis of competing engagements. From a data corpus of naturally occurring interactions in public Google Hangouts, we focus on instances of competing engagements triggered by the co-presence of unratified participants in broadcasters’ physical environments. As users are immersed in their everyday spaces, interferences from thei…
Non-Take-Up of Benefits and Rights
The present study adds valuable perspective to the ongoing theoretical and practical universality-selectivity debate in the context of (non-) take-up of benefits by delving into the online information angle. People with a digital divide may be affected by such differences since they are more likely to need selective benefits. Almost all researchers agree that knowledge is a crucial barrier to benefits take-up. However, most researchers place the …
Fewer but More Elaborate
Information accessibility in journalism operates along two dimensions that may work against each other: increasing information availability raises what news stories offer audiences, while simultaneously elevating the cognitive demands that determine whether audiences can use it. To test whether this gap functions as a participation filtering mechanism, we examine how four informational features, namely statistical information, external sources, d…
Data, Sense, and Sensibility
Data journalism (DJ) seeks to enhance audience comprehension and engagement by integrating statistical information, diverse sources, data visualizations, and journalistic style. However, the way DJ stories are framed—whether through an analytic approach that prioritizes precision or an affective approach that emphasizes emotional engagement—may shape audience interactivity in distinct ways. This study examines how journalistic style influences au…
Computer Science (14 works) · World Wide Web (10 works) · Psychology (8 works) · Human–computer interaction (6 works) · Sociology (6 works) · Data science (5 works) · Internet privacy (5 works) · Political science (4 works) · Complex Network Analysis Techniques (3 works) · Data Visualization and Analytics (3 works)