People Directory

S. Shyam Sundar

Distinguished Professor / Co-Director, Media Effects Research Laboratory, Advertising/Public Relations, Media Studies

Biography

S. Shyam Sundar is the founder of the Media Effects Research Laboratory, a leading facility of its kind in the country. He teaches courses in the psychology of communication technology, media theory, and research methodology.

He earned his doctoral and master’s degrees in communication. He also holds bachelor's degrees in communication and engineering. His industry experience includes more than eight years as a journalist.

Just as his background is eclectic, his current work is quite interdisciplinary—he holds joint faculty appointments in the departments of film-video and media studies, advertising, architecture, and communication arts and sciences at Penn State.

Prof. Sundar’s research investigates social and psychological effects of technological elements unique to online communication, ranging from websites to newer social and personal media. In particular, his studies experimentally investigate the effects of interactivity, navigability, multi-modality, and agency (source attribution) in digital media interfaces upon online users’ thoughts, emotions, and actions.

His research is supported by the National Science Foundation, Korea Science and Engineering Foundation, the MacArthur Foundation and Lockheed Martin Information Systems and Global Services, among others.

Sundar was among the first to publish refereed research on the effects of internet-based media in Journal of Communication, the flagship publication of the International Communication Association (ICA). His work has also appeared in other leading journals, such as Communication Research, Human Communication Research, Media Psychology, Human Computer Interaction, International Journal of Human-Computer Studies, Behaviour & Information Technology, The Information Society, Journal of Advertising, and Journalism & Mass Communication Quarterly. In addition, he has published in leading conference proceedings such as CHI (Computer Human Interaction), HRI (Human Robot Interaction), and INTERACT.

In a content analysis of journal articles published during the first decade of the Internet, Sundar was identified as the most published author of Internet-related research in the field of communications, and across 11 leading journals of communications, marketing and advertising (Cho & Khang, 2006; Journal of Advertising, 35: 3, 143-163).

A frequently cited source on technology, Sundar has testified before Congress as an expert witness and delivered talks at several universities in the United States, Germany, Netherlands, Hong Kong, Korea, China, Singapore and India. He has served on the editorial boards of 18 journals, including Communication Research, Journal of Communication, Human Communication Research, Media Psychology, Journalism & Mass Communication Quarterly, Journal of Broadcasting & Electronic Media and Journal of Advertising.

He is currently editor-in-chief of the Journal of Computer-Mediated Communication, the leading publication in the fields of Communication and Information & Library Sciences (http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1083-6101).

He was elected chair of the Communication & Technology Division and vice president of the International Communication Association, 2008-2010. His contribution to the field also includes serving as the head of the Communication Technology Division of the Association for Education in Journalism & Mass Communication in 2000-2001. More recently, he was member and chair of the association's Publications Committee and also served on its Strategic Plan Committee.

Expertise

  • Internet Uses & Effects
  • Social Media Trends
  • Web Interfaces
  • Mobile Media
  • Psychology Of Human-Computer/Human-Robot Interaction

Publications

Waddell, T. F., Auriemma, J., & Sundar, S. S. (2016). Make it simple, or force users to read? Paraphrased design improves comprehension of end user license agreements. Proceedings of the 2016 Annual Conference on Human Factors in Computing Systems (CHI’16), 5252-5256.

Jung, E., Waddell, T. F., & Sundar, S. S. (2016). Feminizing robots: User responses to gender cues on robot body and screen. Proceedings of CHI’16 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’16), 3107-3113.

Gambino, A., Kim, J., Sundar, S. S., Ge, J., & Rosson, M. B. (2016). User disbelief in privacy paradox: Heuristics that determine disclosure. Proceedings of CHI’16 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’16), 2837-2843.

Sundar, S. S., Waddell, T. F., & Jung, E. (2016). The Hollywood robot syndrome: Media effects on older adults’ robot attitudes and adoption intentions. Proceedings of 2016 ACM/IEEE International Conference on Human-Robot Interaction (HRI’16), 343-350.

Sun, Y., & Sundar, S. S. (2016).  Psychological importance of human agency: Effects of self-assembly and expectation setting on human-robot interaction. Proceedings of 2016 ACM/IEEE International Conference on Human-Robot Interaction (HRI’16), 189-196.

Jung, E., & Sundar, S. S. (2016). Senior citizens on Facebook: How do they interact and why? Computers in Human Behavior, 61, 27-35.

Kang, H., & Sundar, S. S. (in press). When self is the source: Effects of media customization on message processing. Media Psychology.

Dou, X., & Sundar, S. S. (2016). Power of the swipe: Why mobile websites should add horizontal swiping to tapping, clicking and scrolling interaction techniques. International Journal of Human Computer Interaction, 32 (4), 352-362.

Appelman, A., & Sundar S. S. (2016). Measuring message credibility: Scale construction and validation with news stories. Journalism & Mass Communication Quarterly, 93 (1), 59-79.

Oh, J., Bellur, S., & Sundar, S. S. (in press). Clicking, assessing, immersing and sharing: An empirical model of user engagement with interactive media. Communication Research.

Kim, H. S., & Sundar, S. S. (2016). Motivating contributions to online forums: Can locus of control moderate the effects of interface cues? Health Communication, 31 (5), 583-595.

Kim, K. J., & Sundar, S. S. (2016). Mobile persuasion: Can screen size and presentation mode make a difference to trust? Human Communication Research, 42, 45-70.

Waddell, T. F., & Sundar, S. S., & Auriemma, J. (2015). Can customizing an avatar motivate exercise intentions and health behaviors among those with low health ideals? Cyberpsychology, Behavior, and Social Networking, 18 (11), 687-690.

Walden, J., Jung, E. H., Sundar, S. S., & Johnson, A. (2015). Mental models of robots among senior citizens: An interview study of interaction expectations and design implications. Interaction Studies, 16 (1), 68-88.

Sundar, S. S., & Sreenivasan, A. (2015). In machines we trust: Can interactivity and recordability undermine democratic technologies? Proceedings of the Seventh International Conference on Information and Communication Technologies and Development (ICTD’15), Article No. 60.

Lee, S., Kim, K. J., & Sundar, S. S. (2015). Customization in location-based advertising: Effects of tailoring source, locational congruity, and product involvement on ad attitudes. Computers in Human Behavior, 336-343.

Sundar, S. S., Go, E., Kim, H. S., & Zhang, B. (2015). Communicating art, virtually! Psychological effects of technological affordances in a virtual museum. International Journal of Human-Computer Interaction, 31, 385-401.

Oh, J., & Sundar, S. S. (2015). How does interactivity persuade? Effects of interactivity on cognitive absorption, elaboration, and attitudes. Journal of Communication, 65, 213-236.

Sundar, S. S. (Ed.). (2015). The handbook of the psychology of communication technology. Malden, MA: Wiley Blackwell.

Sundar, S. S., Jia, H., Waddell, T. F., & Huang, Y. (2015). Toward a theory of interactive media effects (TIME): Four models for explaining how interface features affect user psychology. In S. S. Sundar (Ed.), The handbook of the psychology of communication technology (pp. 47-86). Malden, MA: Wiley Blackwell.

Park, E. K., & Sundar, S. S. (2015). Can synchronicity and visual modality enhance social presence in mobile messaging? Computers in Human Behavior, 45, 121-128.

Oeldorf-Hirsch, A., & Sundar, S. S. (2015). Posting, commenting, and tagging: Effects of sharing news stories on Facebook. Computers in Human Behavior, 44, 240-249.

Lee, S., & Sundar, S. S. (2015). Cosmetic customization of mobile phones: Cultural antecedents, psychological correlates. Media Psychology, 18 (1), 1-23.

Lee, S., Bang, H., & Sundar, S. S. (2014). Social interaction in mobile games: Priming opponents’ presence and haptic feedback. Proceedings of HCI Korea (HCIK’15), 104-108.

Kim, K. J., & Sundar, S. S. (2014). Does screen size matter for smartphones? Utilitarian and hedonic effects of screen size on smartphone adoption. Cyberpsychology, Behavior, and Social Networking, 17 (7), 466-473.

Kim, H. S., & Sundar, S. S. (2014). Can online buddies and bandwagon cues enhance user participation in online health communities? Computers in Human Behavior, 37, 319-333.

Bellur, S., & Sundar, S. S. (2014). How can we tell when a heuristic has been used? Design and analysis strategies for capturing the operation of heuristics. Communication Methods and Measures, 8 (2), 116-137.

Limperos, A. M., Woolley, J. K., Tamul, D. J., Spinda, J., & Sundar, S. S. (2014). “It’s not who you know, but who you add”: An investigation into the differential impact of friend adding and self-disclosure on interpersonal perceptions on Facebook. Computers in Human Behavior, 35, 496-505.

Sundar, S. S., Bellur, S., Oh, J., Jia, H., & Kim, H. S. (in press). Theoretical importance of contingency in human-computer interaction: Effects of message interactivity on user engagement. Communication Research.

Waddell, T., Sundar, S. S., & Jung, E. H. (2014). The young and the vulnerable? Perceived negative effects of robots on youngsters prevent older adults from adopting companion robots. Proceedings of CHI’14 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’14), 1981-1986.

Zhang, B., Wu, M., Kang, H., Go, E., & Sundar, S. S. (2014). Effects of security warnings and instant gratification cues on attitudes toward mobile websites. Proceedings of the 2014 Annual Conference on Human Factors in Computing Systems (CHI’14), 111-114.

Xu, Q., & Sundar, S. S. (2014). Lights, camera, music, interaction! Interactive persuasion in e-commerce. Communication Research, 41 (2), 282-308.

Sundar, S. S., Tamul, D., & Wu, M. (2014). Capturing “cool”: Measures for assessing coolness of technological products. International Journal of Human-Computer Studies, 72, 169-180.

Sundar, S. S., Bellur, S., Oh, J., Xu, Q., & Jia, H. (2014). User experience of on-screen interaction techniques: An experimental investigation of clicking, sliding, zooming, hovering, dragging and flipping. Human Computer Interaction, 29 (2), 109-152.

Guillory, J., & Sundar, S. S. (2014). How does website interactivity affect our perceptions of an organization? Journal of Public Relations Research, 26 (1), 44-61.

Jia, H., Sundar, S. S., Lee, J. Y., & Lee, S. (2014). Is Web 2.0 culture-free or culture-bound? Differences between American and Korean blogs. Proceedings of the 47th Annual Hawaii International Conference on System Sciences (HICSS), IEEE Computer Society Press, 1735-1744.

Sundar, S. S., & Limperos, A. (2013). Uses and grats 2.0: New gratifications for new media. Journal of Broadcasting & Electronic Media, 57 (4), 504-525.

Kang, H., & Sundar, S. S. (2013). Depleted egos and affirmed selves: The two faces of customization. Computers in Human Behavior, 29 (6), 2273-2280.

Li, R., Zhang, B., Sundar, S. S., & Duh, H. B-L. (2013). Interacting with augmented reality: How does location-based AR enhance learning? In P. Kotzé et al. (Eds.), Proceedings of INTERACT 2013, Part II, LNCS 8118, 616-623.

Sundar, S. S., Dou, X., & Lee, S. (2013). Communicating in a Ubicomp world: Interaction rules for guiding design of mobile interfaces. In P. Kotzé et al. (Eds.), Proceedings of INTERACT 2013, Part II, LNCS 8118, 730-747.

Nie, J., & Sundar, S. S. (2013). Who would pay for Facebook? Self esteem as a predictor of user behavior, identity construction and valuation of virtual possessions. In P. Kotzé et al. (Eds.), Proceedings of INTERACT 2013, Part III, LNCS 8119, 726-743.

Lee, J. Y., & Sundar, S. S. (2013). To tweet or to retweet? That is the question for health professionals on Twitter. Health Communication, 28 (5), 509-524.

Kim, K. J., & Sundar, S. S. (2013). Can interface features affect aggression resulting from violent video game play? An examination of realistic controller and large screen-size. Cyberpsychology, Behavior, and Social Networking, 16 (5), 329-334.

You, S., & Sundar, S. S. (2013). I feel for my avatar: Embodied perception in VEs. Proceedings of the 2013 Annual Conference on Human Factors in Computing Systems (CHI’13), 3135-3138.

Sundar, S. S., Kang, H., Wu, M., Go, E., & Zhang, B. (2013). Unlocking the privacy paradox: Do cognitive heuristics hold the key? Proceedings of CHI’13 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’13), 811-816.

Jia, H., Wu. M., Jung, E., Shapiro, A., & Sundar, S. S. (2013). When the tissue box says “Bless You!”: Using speech to build socially interactive objects. Proceedings of CHI’13 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’13), 1635-1640.

Kim, K. J., Park, E., & Sundar, S. S. (2013). Caregiving role in human-robot interaction: A study of the mediating effects of perceived benefit and social presence. Computers in Human Behavior, 29 (4), 1799-1806.

Sundar, S. S., Oh, J., Kang, H., & Sreenivasan, A. (2013). How does technology persuade? Theoretical mechanisms for persuasive technologies. In J. P. Dillard & L. Shen (Eds.), The SAGE Handbook of Persuasion (2nd ed.): Developments in Theory and Practice (pp. 388-404). Thousand Oaks, CA: Sage Publications.

Cingel, D., & Sundar, S. S. (2012). Texting, techspeak, and tweens: The relationship between text messaging and English grammar skills. New Media & Society, 14 (8), 1304-1320.

Kim, N. Y., & Sundar, S. S. (2012). Personal relevance vs. contextual relevance: The role of relevant ads in personalized websites. Journal of Media Psychology, 24 (3), 89-101.

Jia, H., Wu, M., Jung, E., Shapiro, A., & Sundar, S. S. (2012). Balancing human agency and object agency: An in-depth interview study of the Internet of Things. Proceedings of the 2012 ACM Conference on Ubiquitous Computing (Ubicomp’12), 1185-1188.

Kim, K. J., Park, E., & Sundar, S. S. (2012). IPS vs. AMOLED: Effects of panel type on smartphone users' viewing and reading experience. In J. J. Park et. al. (Eds.), Proceedings of the 5th International Conference on Human-Centric Computing (HumanCom'12), LNEE 182, 77-84.

Kim, S., Kim, K. J., Sundar, S. S., & Biocca, F. (2012). Electronic cane for visually impaired persons: Empirical examination of its usability and effectiveness. In J. J. Park et. al. (Eds.), Proceedings of the 5th International Conference on Human-Centric Computing (HumanCom'12), LNEE 182, 71-76.

Stavrositu, C., & Sundar, S. S. (2012). Does blogging empower women? Exploring the role of agency and community. Journal of Computer-Mediated Communication, 17, 369-386.

Kim, K. J., Kim, S., Park, E., Sundar, S. S., & del Pobil, A. P. (2012). The more the better? Effects of ad exposure frequency on online consumers with varying product knowledge. Proceedings of the 8th International Conference on Interaction Science and Digital Content Technology (ICIDT'12), 92-96.

Sundar, S. S., Bellur, S., & Jia, H. (2012). Motivational technologies: A theoretical framework for designing preventive health applications. In M. Bang & E. L. Ragnemalm (Eds.), Proceedings of the 7th International Conference on Persuasive Technology (PERSUASIVE 2012), LNCS 7284, 112-122.

DiMuzio, E., & Sundar, S. S. (2012). Does a hyperlink function as an endorsement? In M. Bang & E. L. Ragnemalm (Eds.), Proceedings of the 7th International Conference on Persuasive Technology (PERSUASIVE 2012), LNCS 7284, 268-273.

Kim, Y., & Sundar, S. S. (2012). Visualizing ideal self vs. actual self through avatars: Impact on preventive health outcomes. Computers in Human Behavior, 28, 1356-1364.

Sundar, S. S., Oh, J., Bellur, S., Jia, H., & Kim, H. S. (2012). Interactivity as self-expression: A field experiment with customization and blogging. Proceedings of the 2012 Annual Conference on Human Factors in Computing Systems (CHI’12), 395-404.

Sundar, S. S., Xu, Q., & Dou, X. (2012). Role of technology in online persuasion: A MAIN Model perspective. In S. Rodgers & E. Thorson (Eds.), Advertising theory (pp. 355-372). New York: Routledge.

Kim, K. J., Park, E., Sundar, S. S., & del Pobil, A. P. (2012). The effects of immersive tendency and need to belong on human-robot interaction. Proceedings of the 7th ACM/IEEE International Conference on Human-Robot Interaction (HRI’12), 207-208.

Nie, J., Park, M., Marin, A. L., & Sundar, S. S. (2012). Can you hold my hand? Physical warmth in human-robot interaction. Proceedings of the 7th ACM/IEEE International Conference on Human-Robot Interaction (HRI’12), 201-202. [Best Late Breaking Report Award]

Park, E., Kim, K. J., Sundar, S. S., & del Pobil, A. P. (2012). Online gaming with robots vs. computers as allies vs. opponents. Proceedings of the 7th ACM/IEEE International Conference on Human-Robot Interaction (HRI’12), 205-206.

Kim, Y., & Sundar, S. S. (2012). Anthropomorphism of computers: Is it mindful or mindless? Computers in Human Behavior, 28, 241-250.

Kang, H., Bae, K., Zhang, S., & Sundar, S. S. (2011). Source cues in online news: Is the proximate source more powerful than distal sources? Journalism & Mass Communication Quarterly, 88 (4), 719-736.

Balakrishnan, B., & Sundar, S. S. (2011). Where am I? How can I get there? Impact of navigability and narrative transportation on spatial presence. Human Computer Interaction, 26, 161-204.

Kim, K. J., & Sundar, S. S. (2011). Does panel type matter for LCD monitors? A study examining the effects of S-IPS, S-PVA, and TN panels in video gaming and movie viewing. In P. Campos et al. (Eds.), Proceedings of INTERACT 2011, Part II, LNCS 6947, 281-288.

Sundar, S. S., Bellur, S., Oh, J., & Jia, H. (2011). Calls for interaction: The more the better? User experience of 3D carousel and additional interaction techniques. In P. Campos et al. (Eds.), Proceedings of INTERACT 2011, Part IV, LNCS 6949, 487-490.

Sundar, S. S., Rice, R. E., Kim, H. S., & Sciamanna, C. (2011). Online health information: Conceptual challenges and theoretical opportunities. In T. Thompson, R. Parrott, & J. Nussbaum (Eds.), Handbook of health communication (2nd ed.) (pp. 181-202). New York: Routledge.

Downs, E. P., & Sundar, S. S. (2011). “We won” vs. “they lost”: Exploring ego-enhancement and self-preservation tendencies in the context of video game play. Entertainment Computing, 2, 23-28.

Kim, H. S., & Sundar, S. S. (2011). Using interface cues in online health community boards to change impressions and encourage user contribution. Proceedings of the 2011 Annual Conference on Human Factors in Computing Systems (CHI’11), 599-608.

Kim, K. J., Sundar, S. S., & Park, E. (2011). The effects of screen-size and communication modality on psychology of mobile device users. Proceedings of the 2011 Annual Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA’11), 1207-1212.

Marathe, S., & Sundar, S. S. (2011). What drives customization? Control or identity? Proceedings of the 2011 Annual Conference on Human Factors in Computing Systems (CHI’11), 781-790.

Sundar, S. S., Oeldorf-Hirsch, A., Nussbaum, J. F., & Behr, R. A. (2011). Retirees on Facebook: Can online social networking enhance their health and wellness? Proceedings of the 2011 Annual Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA’11), 2287-2292.

Sundar, S. S., Xu, Q., Bellur, S., Oh, J., & Jia, H. (2011). Beyond pointing and clicking: How do newer interaction modalities affect user engagement? Proceedings of the 2011 Annual Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA’11), 1477-1482.

Garris, K., Guillory, J., & Sundar, S. S. (2011). Does interactivity serve the public interest? The role of political blogs in deliberative democracy. International Journal of Interactive Communication Systems and Technologies, 1, 1-18.

Lee, N., Shin, H., & Sundar, S. S. (2011). Utilitarian vs. hedonic robots: Role of parasocial tendency and anthropomorphism in shaping user attitudes. Proceedings of the 6th International Conference on Human-Robot Interaction (HRI’11), 183-184.

Sah, Y. J., Yoo, B., & Sundar, S. S. (2011). Are specialist robots better than generalist robots? Proceedings of the 6th International Conference on Human-Robot Interaction (HRI’11), 241-242.

You, S., Nie, J., Suh, K., & Sundar, S. S. (2011). When the robot criticizes you…Self-serving bias in human-robot interaction. Proceedings of the 6th International Conference on Human-Robot Interaction (HRI’11), 295-296.

Sundar, S. S., & Bellur, S. (2011). Concept explication in the internet age: The case of interactivity. In E. P. Bucy & R. L. Holbert (Eds.), Sourcebook for political communication research: Methods, measures, and analytical techniques (pp. 485-500). New York: Routledge.

Koh, Y. J., & Sundar, S. S. (2010). Effects of specialization in computers, web sites and web agents on e-commerce trust. International Journal of Human-Computer Studies, 68, 899-912.

Kim, N. Y., & Sundar, S. S. (2010). Relevance to the rescue: Can smart ads reduce negative response to online ad clutter? Journalism & Mass Communication Quarterly, 87 (2), 346-362.

Hutton, E., & Sundar, S. S. (2010). Can video games enhance creativity? Effects of emotion generated by Dance Dance Revolution. Creativity Research Journal, 22 (3), 294-303.

Sundar, S. S., & Marathe, S. S. (2010). Personalization vs. customization: The importance of agency, privacy and power usage. Human Communication Research, 36, 298-322.

Sundar, S. S., Xu, Q., & Bellur, S. (2010). Designing interactivity in media interfaces: A communications perspective. Proceedings of the 28th International Conference on Human Factors in Computing Systems (CHI’10), 2247-2256.

Sundar, S. S., Xu, Q., Bellur, S., Oh, J., & Jia, H. (2010). Modality is the message: Interactivity effects on perception and engagement. Proceedings of the 28th of the International Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA’10), 4105-4110.

Koh, Y. J., & Sundar, S. S. (2010). Heuristic versus systematic processing of specialist versus generalist sources in online media. Human Communication Research, 36, 103-124.

Hu, Y., & Sundar, S. S. (2010). Effects of online health sources on credibility and behavioral intentions. Communication Research, 37 (1), 105-132.

Wagner, C., & Sundar, S. S. (2009). Sneaking it in: The importance of peripheral processing in promoting strong anti-drug attitudes. American Journal of Media Psychology, 2 (1/2), 9-43.

Syvertsen, A. K., Stout, M. D., & Flanagan, C. A. (with Mitra, D. L., Oliver, M. B., & Sundar, S. S.). (2009). Using elections as teachable moments: A randomized evaluation of the Student Voices civic education program. American Journal of Education, 116, 33-67.

Sundar, S. S. (2009). Media effects 2.0: Social and psychological effects of communication technologies. In R. L. Nabi & M. B. Oliver (Eds.), The SAGE handbook of media processes and effects (pp. 545-560). Thousand Oaks, CA: Sage Publications.

Kim, Y., & Sundar, S. S. (2009). Me, myself, and my avatar: The effects of avatar on SNW (Social Networking) users' attitudes toward a website and its ad content. In N. T. Wood & M. R. Solomon (Eds.), Virtual social identity and consumer behavior (pp. 141-156). Armonk, NY: M. E. Sharpe.

Lee, E-J., & Sundar, S. S. (2009). Human-computer interaction. In C. R. Berger, M. E. Roloff, & D. R. Roskos-Ewoldsen (Eds.), The handbook of communication science (2nd ed.) (pp. 507-523). Thousand Oaks, CA: Sage Publications.

Sundar, S. S., Xu, Q., & Oeldorf-Hirsch, A. (2009). Authority vs. peer: How interface cues influence users. Proceedings of the 27th International Conference Extended Abstracts on Human Factors in Computing Systems (CHI’09), 27, 4231-4236.

Sundar, S. S. (2009). Online journalism: The psychology of mass communication on the Web. In L. Leung, A. Y. H. Fung & P.S.N. Lee (Eds.), Embedding into our lives: New opportunities and challenges of the internet (pp. 127-144). Hong Kong: The Chinese University Press.

Sundar, S. S., Oeldorf-Hirsch, A., & Garga, A. (2008). A cognitive-heuristics approach to understanding presence in virtual environments. In A. Spagnolli and L. Gamberini (Eds.), PRESENCE 2008: Proceedings of the 11th Annual International Workshop on Presence (pp. 219-228). Padova, Italy: CLEUP Cooperativa Libraria Universitaria Padova. Article retrievable from: http://www.temple.edu/ispr/prev_conferences/proceedings/2008/sundar.pdf

Kalyanaraman, S., & Sundar, S. S. (2008). Portrait of the portal as a metaphor: Explicating Web portals for communication research. Journalism & Mass Communication Quarterly, 85 (2), 239-256.

Banjo, O., Hu, Y., & Sundar, S. S. (2008). Cell phone usage and social interaction with proximate others: Ringing in a theoretical model. The Open Communication Journal, 2, 127-135. Article retrievable from: http://www.bentham.org/open/tocommj/openaccess2.htm

Wagner, C., & Sundar, S. S. (2008). The curiosity-arousing function of anti-drug ads. The Open Communication Journal, 2, 43-59. Article retrievable from: http://www.bentham.org/open/tocommj/openaccess2.htm

Sundar, S. S. (2008). Self as source: Agency and customization in interactive media. In E. Konijn, S. Utz, M. Tanis, & S. Barnes (Eds.), Mediated interpersonal communication (pp. 58-74). New York: Routledge.

Kalyanaraman, S., & Sundar, S. S. (2008). Impression formation effects in online mediated communication. In E. Konijn, S. Utz, M. Tanis, & S. Barnes (Eds.), Mediated interpersonal communication (pp. 217-233). New York: Routledge.

Sundar, S. S., Oeldorf-Hirsch, A., & Xu, Q. (2008). The bandwagon effect of collaborative filtering technology. Proceedings of CHI’08 Extended Abstracts on Human Factors in Computing Systems, 26, 3453-3458.

Stavrositu, C., & Sundar, S. S. (2008). Can blogs empower women? Designing agency-enhancing and community-building interfaces. Proceedings of CHI’08 Extended Abstracts on Human Factors in Computing Systems, 26, 2781-2786.

Stavrositu, C., & Sundar, S. S. (2008). If internet credibility is so iffy, why the heavy use? The relationship between medium use and credibility. Cyberpsychology & Behavior, 11 (1), 65-68.

Sundar, S. S. (2008). The MAIN model: A heuristic approach to understanding technology effects on credibility. In M. J. Metzger & A. J. Flanagin (Eds.), Digital media, youth, and credibility (pp. 72-100). Cambridge, MA: The MIT Press. Chapter retrievable from http://mitpress2.mit.edu/books/chapters/0262294230chap4. pdf

Sundar, S. S. (2007). Social psychology of interactivity in human-website interaction. In A. N. Joinson, K. Y. A. McKenna, T. Postmes & U-D. Reips (Eds.), The Oxford handbook of internet psychology (pp. 89-104). Oxford, UK: Oxford University Press.

Sundar, S. S., Edwards, H. H., Hu, Y., & Stavrositu, C. (2007). Blogging for better health: Putting the “public” back in public health. In M. Tremayne (Ed.), Blogging, citizenship, and the future of media (pp. 83-102). New York: Routledge.

Sundar, S. S., Knobloch-Westerwick, S., & Hastall, M. R. (2007). News cues: Information scent and cognitive heuristics. Journal of the American Society for Information Science and Technology, 58 (3), 366-378.

Sundar, S. S. (2007). Agency and on-line media. In J. J. Arnett (Ed.), Encyclopedia of children, adolescents, and the media (pp. 635-636). Thousand Oaks, CA: Sage Publications.

Marathe, S. S., & Sundar, S. S. (2007). Human-computer interaction (HCI). In J. J. Arnett (Ed.), Encyclopedia of children, adolescents, and the media (pp. 389-392). Thousand Oaks, CA: Sage Publications.

Hu, Y., & Sundar, S. S. (2007). Computer-mediated communication (CMC). In J. J. Arnett (Ed.), Encyclopedia of children, adolescents, and the media (pp. 200-202). Thousand Oaks, CA: Sage Publications.

Hutton, E., & Sundar, S. S. (2007). Internet use, positive uses. In J. J. Arnett (Ed.), Encyclopedia of children, adolescents, and the media (pp. 444-446). Thousand Oaks, CA: Sage Publications.

Stavrositu, C., & Sundar, S. S. (2007). Internet use, psychological effects. In J. J. Arnett (Ed.), Encyclopedia of children, adolescents, and the media (pp. 446-448).  Thousand Oaks, CA: Sage Publications.

Kalyanaraman, S., & Sundar, S. S. (2006). The psychological appeal of personalized online content in Web portals: Does customization affect attitudes and behavior? Journal of Communication, 56, 110-132.

Lee, S. Y., & Sundar, S. S. (2006). To vary or not? The effects of ad variation on the Web. Youngstown, NY: Cambria Press.

Sundar, S. S., & Oliver, M. B. (2005). Student-friendly journals and journal-friendly curricula. Journalism & Mass Communication Educator, 60 (1), 6-12.

Sundar, S. S., & Kim, J. (2005). Interactivity and persuasion: Influencing attitudes with information and involvement. Journal of Interactive Advertising, 5 (2), 6-29. Article retrievable from: http://www.jiad.org/article59

Sundar, S. S. (2004). Theorizing interactivity’s effects. The Information Society, 20 (5), 387-391.

Diao, F., & Sundar, S. S. (2004). Orienting responses and memory for Web advertisements: Exploring effects of pop-up window and animation. Communication Research, 31 (5), 537-567.

Sundar, S. S. (2004). Loyalty to computer terminals: Is it anthropomorphism or consistency? Behaviour & Information Technology, 23 (2), 107-118.

Sundar, S. S., & Kalyanaraman, S. (2004). Arousal, memory, and impression-formation effects of animation speed in Web advertising. Journal of Advertising, 33 (1), 7-17.

Sundar, S. S., Kalyanaraman, S., & Brown, J. (2003). Explicating website interactivity: Impression-formation effects in political campaign sites. Communication Research, 30 (1), 30-59.

Sundar, S. S. (2003). News features and learning. In J. Bryant, D. Roskos-Ewoldsen & J. Cantor (Eds.), Communication and emotion: Essays in honor of Dolf Zillmann (pp. 275-296). Mahwah, NJ: Lawrence Erlbaum Associates.

Sundar, S. S. (2003). Why we should NOT teach technology. Journalism & Mass Communication Educator, 57 (4), 297-301.

Sundar, S. S., & Wagner, C. B. (2002). The world wide wait: Exploring physiological and behavioral effects of download speed. Media Psychology, 4, 173-206.

Sundar, S. S., & Nass, C. (2001). Conceptualizing sources in online news. Journal of Communication, 51 (1), 52-72.

Sundar, S. S. (2000). Multimedia effects on processing and perception of online news: A study of picture, audio, and video downloads. Journalism & Mass Communication Quarterly, 77 (3), 480-499.

Sundar, S. S., & Nass, C. (2000). Source orientation in human-computer interaction: Programmer, networker, or independent social actor? Communication Research, 27 (6), 683-703.

Lievrouw, L. A., Bucy, E., Finn, T. A., Frindte, W., Gershon, R., Haythornthwaite, C., Köhler, T., Metz, J. M., & Sundar, S. S. (2000). Building the subdisciplines: An overview of communication and technology research. Communication Yearbook 24, 271-295.

Sundar, S. S. (1999). Exploring receivers’ criteria for perception of print and online news. Journalism & Mass Communication Quarterly, 76 (2), 373-386.

Sundar, S. S., Narayan, S., Obregon, R., & Uppal, C. (1998). Does Web advertising work? Memory for print vs. online media. Journalism & Mass Communication Quarterly, 75 (4), 822-835.

Sundar, S. S. (1998). Effect of source attribution on perception of online news stories. Journalism & Mass Communication Quarterly, 75 (1), 55-68.

Sundar, S. S., & Rawlins, B. L. (1997). Watchdog or lapdog? The effect of US foreign policy on The New York Times’ coverage of Central America. The Journal of International Communication, 4 (1), 67-80.

Zillmann, D., Gibson, R., Sundar, S. S., & Perkins, Jr., J. W. (1996). Effects of exemplification in news reports on the perception of social issues. Journalism & Mass Communication Quarterly, 73 (2), 427-444.

Schooler, C., Sundar, S. S., & Flora, J. (1996). Effects of the Stanford Five-City Project media advocacy program. Health Education Quarterly, 23 (3), 346-364.

Riffe, D., Aust, C. F., Jones, T. C., Shoemake, B., & Sundar, S. S. (1994). The ‘shrinking foreign newshole’ of the New York Times. Newspaper Research Journal, 15 (3), 74-88.

Zillmann, D., Rockwell, S., Schweitzer, K., & Sundar, S. S. (1993). Does humor facilitate coping with physical discomfort? Motivation & Emotion, 17(1), 1-21.

Zillmann, D., Perkins, Jr., J. W., & Sundar, S. S. (1992). Impression-formation effects of printed news varying in descriptive precision and exemplifications. Medien Psychologie, 4, 168-185.

Riffe, D., Hedgepeth, J. K., Ziesenis, E. B., Chandler, S. B., Howard, T. B., Sundar, S., & Woodrum, R. H. (1992). The influence of journals on curriculum and instruction. Journalism Educator, 47 (3), 54-60.

Sridhara, B. A., Sundar, S. S., & Chaluvaraju, D. (1988). Status of small newspapers in developing societies...A case study of Shimoga district. ICCTR Journal, 1 (1), 3-21.