S. Shyam Sundar

S. Shyam Sundar is James P. Jimirro Professor of Media Effects and the Founder and Co-Director of the Media Effects Research Laboratory at the Donald P. Bellisario College of Communications at Penn State. He is Director of the university-wide Center for Socially Responsible Artificial Intelligence (https://csrai.psu.edu), an interdisciplinary consortium that is devoted to the development and application of AI with an emphasis on its social and ethical implications, enhancing social good and mitigating threats from its misuse.

He earned his doctoral and master’s degrees in communication and psychology. 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. He teaches courses in the psychology of communication technology, media theory, and research methodology.

Prof. Sundar is a theorist as well as an experimentalist who uses a variety of quantitative and qualitative approaches in his research, including computationally intensive methods. His theoretical contributions include several original models on the social and psychological consequences of communication technology— Modality-Agency-Interactivity-Navigability (MAIN) Model, Uses and Gratifications 2.0, Interactivity Effects Model, Agency Model of Customization, Motivational Technology Model, Online Source Typology and the Theory of Interactive Media Effects (TIME).

His empirical work investigates social and psychological effects of human-computer interaction (HCI) and computer-mediated communication (CMC) with specific focus on technological elements unique to online communication via modern media, ranging from websites to newer social and personal media. In particular, his studies investigate the effects of interactivity, navigability, multi-modality, and agency (source attribution) in digital media interfaces upon online users’ thoughts, emotions, and actions. Current research pertains to fake news, chatbots and smart speakers, AI algorithms, online privacy, social media effects, and the strategic use of media and communication technologies for motivating healthy and prosocial human behaviors.

His research is supported by the National Science Foundation (NSF), MacArthur Foundation, Facebook, Inc., 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 the 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 CSCW (Computer-Supported Cooperative Work).

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 US 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 over 20 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 editor of the first-ever Handbook on the Psychology of Communication Technology, published by Blackwell Wiley in 2015. From 2013 to 2017, Sundar was editor-in-chief of the Journal of Computer-Mediated Communication.

Sundar is an Evan Pugh University Professor, the highest honor bestowed on a faculty member at Penn State. He is also a winner of Penn State's Faculty Scholar Medal, for outstanding achievement in social and behavioral sciences. He is a Fellow of ICA, and was elected chair of the Communication & Technology division and Vice-President of ICA, 2008-2010. He is a recipient of the Frederick Williams Prize awarded by the division for contribution to the study of communication technology. He is the youngest recipient of the Deutschmann award for research excellence from the Association for Education in Journalism and Mass Communication (AEJMC). His contribution to the field also includes serving as the head of the Communication Technology Division of AEJMC, 2000-2001, and serving on its Strategic Plan Committee. He has also chaired the Publications Committees of ICA and AEJMC.

An avid music fan, Shyam is a long-time host of the radio show Jazz Spectrum, which airs Wednesday mornings from 9 to 11 am EST on the local station WKPS, accessible on the dial at 90.7 FM and on the Web at www.thelion.fm

• Measuring Cognitive Heuristics: A Sage Video
• Architects of Communication Scholarship - Dr. Shyam Sundar’s Interdisciplinary Work Across Communication, Psychology, and Computer Science
• Media Effects Research in the Age of Artificial Intelligence, Automation, and Algorithms: Insights from a Pioneering Interdisciplinary Scholar
• PODCAST: "Trust in AI" / Life, Meet Tech
• SPEAKER SERIES: "Why Do We Fall for Fake News, and What Can Be Done About It?"
• PODCAST: You Won't Believe What Charles and Shyam Say ...
• TALK: Do We Trust Machines Too Much? (Talk @ CHI Lites 2019)
• INTERVIEW: Conversation with Prof. Shyam Sundar
• INTERVIEW: Exploring "Media Effects" -- Conversations from Penn State (WPSU-TV)
• SPEECH: Fall 2016 Commencement Address
• VIDEO: Profile of Shyam, the Jazz DJ
• VIDEO: Probing Question: Can Robots be too Human?
• TALK: "Tweeting, Digging, Blogging ..." from Penn State Research Unplugged

• More user control may help ease negative reactions to ads on voice assistants
• Showing AI users diversity in training data boosts perceived fairness and trust
• Ask an expert: Pop culture in the 2024 presidential election
• The Communicator (Bellisario College Annual Report, 2023-24)
• NIH grant supports developing voice assistant for persons living with dementia
• Ask an expert: AI and disinformation in the 2024 presidential election
• Q&A: In ChatGPT we trust?
• User control of autoplay can alter awareness of online video ‘rabbit holes’
• Five Penn Staters named 2024-25 BTAA Academic Leadership Program Fellows
• S. Shyam Sundar named Evan Pugh University Professor
• Five faculty members honored with Evan Pugh University Professorships
• Virtual reality better than video for evoking fear, spurring climate action
• Central Pa. creators, cybersecurity expert reacts to TikTok bill passage
• Why you might want Alexa or Siri to sound more like you
• Center for Socially Responsible AI awards seed funding to five projects
• Slow the scroll: Users less vigilant about misinformation on mobile phones
• When seeing isn't believing: Navigating visual misinformation in the age of AI
• The Digital Human: From AI to offline, exploring dating in the digital world
• What if Alexa or Siri sounded more like you? Study says you'll like it better
• Want to prevent misinformation? Present data with an interactive visual, says study
• AI ‘Companion’ Robots: The next must-have health tech?
• How to stop AI deepfakes from sinking society — and science
• Penn State Professor Shyam Sundar on the use of AI tools in education
• The Feature Shoot Photography Podcast
• How easy is it to fool A.I.-detection tools?
• Podcast: Architects of Communication Scholarship - Dr. Shyam Sundar’s interdisciplinary work across communication, psychology and computer science
• 'Zombie' misinformation: 'Rape Day' hoax resurfaces on TikTok
• Transparent labeling of training data may boost trust in artificial intelligence
• App users wary of health and fitness recommendations based on social media data
• Meet the jailbreakers hypnotizing ChatGPT into bomb-building
• Convenience, control among benefits that inspire automated feature use
• Regulating AI: 3 experts explain why it’s difficult to do and important to get right
• How to tell If a photo Is an AI-generated fake
• ChatGPT could make tech feel more human — but don’t treat It like one, AI experts say
• Why artificial intelligence could make dating better — and duller
• Penn State faculty discuss how social media procedures changed ‘post-pandemic’ reality
• People open up more to smart speakers that listen actively
• Turning video on and seeing others may boost remote class experience
• Warm and cold: Interactive media tools shape political feelings and attitudes
• TikTok is a misinformation minefield. Don’t get trapped up
• People who distrust fellow humans show greater trust in artificial intelligence
• Users trust AI as much as humans for flagging problematic content
• Turning phones on silent may increase phone checking
• From deepfakes to fake news, S. Shyam Sundar takes on the internet's bad actors
• Our devices are changing us
• Interactive tools may help people become their own big data journalists
• Subtle signals can influence whether people trust online recommendations
• Advertising source may drive experience for some Siri users
• Outage outrage: Facebook outage may reveal depth of social media dependency
• Interactivity improves transparency, deepens trust of AI symptom checkers
• Journalism experts reflect on misinformation, mistrust, and the Jan. 6 insurrection
• Enabling end-user agency and trust in artificial intelligence systems
• Tailoring affects people's perceptions of dates suggested by online dating apps
• S. Shyam Sundar named director of the Center for Socially Responsible AI
• Incels, men’s rights groups, and culture-war trolls glom onto Gabby Petito’s death
• Forceful vaccine messages backfire with holdouts – how can it be done better?
• Video fake news believed more, shared more than text and audio versions
• Gender, personality influence use of interactive tools online
• Interactive media reduce negative reactions to health messages, boost compliance
• You won’t read this life-changing study about clickbait headlines
• How AIs ask for personal information is important for gaining user trust
• Patients may not take advice from AI doctors who know their names
• How to detect, resist and counter the flood of fake news
• Consumers make decisions based on how and why products are recommended online
• Group-chatting platform Discord might change social media with its business model
• Section 230 likely to take center stage at Big Tech hearing: 'Everyone's looking for something to blame'
• Health ads in users' customized online sites may evoke negative reactions
• How to spot COVID-19 vaccine misinformation
• For older adults, specific Facebook activities more important than overall use
• Forecasts for journalism in 2021
• Why WhatsApp never took off in the U.S.
• Healthy skepticism: People may be wary of health articles on crowdsourced sites
• Penn State researchers to study political content sharing on Facebook
• VIDEO: CHI Lites — Do we trust machines too much?
• PODCAST: Coronavirus has made us realise how networked we are
• Faculty member recognized for contributions to study of communication technology
• Web of psychological cues may tempt people to reveal more online
• The weird psychological reason people reveal so much about themselves online
• Anxious about public speaking? Your smart speaker can help
• Privacy worries prevent use of social media account for signing up for apps
• Do privacy controls lead to more trust in Alexa? Not necessarily, research finds
• AI advice as influential as humans', but positive crowd opinion still overpowers
• Using cues and actions to help people get along with artificial intelligence
• Audience size and comments may affect enjoyment of social television
• This startup is fighting India’s fake news problem on WhatsApp
• Humans and AI team up to improve clickbait detection
• The chatbots are coming!
• Tech-savvy people more likely to trust digital doctors
• VIDEO: Digital Anxiety
• Location and brand affect people's trust in cloud services
• Study finds Wi-Fi location affects online privacy behavior
• Believing machines can out-do people may fuel acceptance of self-driving cars
• People more likely to trust machines than humans with their private information
• Privacy settings can help ease suspicion of recommendation-making sites and apps
• Adding human touch to unchatty chatbots may lead to bigger letdown
• VIDEO: Penn State's Leadership in Artificial Intelligence Research
• VIDEO: A Digital Detox (Part 1, General)
• VIDEO: A Digital Detox (Part 2, FOMO)
• Creepy computers or people partners? Working to make AI that enhances humanity
• Seed grants awarded to projects using Twitter data
• Interactive websites may cause antismoking messages to backfire
• Facebook launches new petition feature
• The ethics of filtering out ‘harmful’ YouTube pranks and challenges
• The freaky way smartphones affect our brains and our lives
• Pumping up fitness app features may add muscle to workout commitment
• Researchers awarded funding to study misinformation on WhatsApp
• Subtle visual cues nudge users to reveal more in online forums
• Empathetic machines favored by skeptics but might creep out believers
• Taking the bait: Why we’re so susceptible to hoaxes
• S. Shyam Sundar selected as inaugural holder of media effects professorship
• Engaging with interactive media may be a sequence of actions, assessments
• Rationalizations by low-paid microworkers raise questions of ethics, rigor
• What do we know about false news?
• Posting, commenting and customizing on Facebook help involve, empower older adults
• User control and transparency are key to trusting personalized mobile apps
• Why it’s so hard to #DeleteFacebook: Constant psychological boosts keep you hooked
• Interactive media, bandwagon, FOMO, and engagement with AR and VR
• YouTube wants to fight fake news by linking conspiracy videos to Wikipedia
• Virtual reality makes journalism immersive, realism makes it credible
• Everyone is talking about our relationship with technology
• Faculty members earn NSF grant for training machines to detect fake news
• Older users like to snoop on Facebook, but worried others might snoop on them
• Negative tweets can trash TV programs for other viewers
• S. Shyam Sundar named Fellow by International Communication Association
• What viral brawl videos say of violence, voyeurism in America
• Here’s how you create echo chambers on Facebook
• Interactive health apps may inspire healthy behavior, but watch the tone
• AUDIO: Discussing fake news on WITF's 'Smart Talk'
• The touchy task of making robots seem human -- but not too human
• Cheery robots may make creepy companions, but could be intelligent assistants
• Sorry America, you have to pay attention to Trump's tweets
• Why do we fall for fake news?
• Users more gullible when they customize their technology
• Coolness, control and community draw people to Pinterest
• Interactive web features can help -- and hurt -- user's memory
• Fight the filter: Snapchat selfies distort users' self image
• Websites with history can be just as conversational as chatting with a person
• The Game’s Afoot, Go Go Go!
• Over 60s more likely to share on Facebook
• Layout change can make licensing agreements more agreeable
• Altering a robot's gender and social roles may be a screen change away
• Study: Seniors, too, use Facebook for social bonding
• Sundar among Faculty Scholar Medal recipients
• Sorry kids, seniors want to connect on Facebook too
• Why do older people love Facebook? Let's ask my dad
• Aging and technology focus of April 14 discussion
• 'Good' robots in movies can help elderly accept them at home
• Some assembly required to boost robot ratings
• Senior citizens may accept robot helpers, but fear robot masters
• Bigger smartphone screens can change a customer's buying intentions
• Technology is changing the millennial brain
• Virtual selves can help boost better real world health and exercise habits
• Robots as reporters
• Shanghai New Media Forum
• Choosing interactive tools for virtual museums mixes art and science
• Location-based ads need more than closeness to overcome creepiness
• La guerra contra los 'selfie sticks'
• Google Maps Is Racist Because the Internet Is Racist
• Emoticons may signal better customer service ; )
• Sundar edits 'Handbook of the Psychology of Communication Technology'
• Certain interactive tools click with web users
• Interactivity tools can boost persuasiveness of websites
• Facebook sharing can boost involvement with news and information
• Interaction history beats interactive chat for website engagement
• Grant to help find why people reveal information online
• Faculty member named distinguished educator
• Mobile phone bling may be a personal, but also cultural thing
• Emojis are ready for their moment
• Emotion drives customers to use smartphones with bigger screens
• Elderly fear future robot friends will corrupt children
• Surprise!Mobile users are Internet savvy
• Robots may need to include parental controls
• Mobile users may not buy into instant gratification cues
• AUDIO: What makes things cool
• Messaging services offer anonymity and a web with fewer consequences
• Tech products can turn uncool when they become too popular
• How American Idol changed television
• Facebook called a 'twit' for Twitter-like feature
• Boosting self-expression online may limit impulsive purchases
• Still on Facebook, but finding less to like
• Mainstreaming of mean
• Twitter must metamorphose carefully as it goes public
• The psychology of 'click here'
• Swarm of rivals seeking slice of social media pie
• Esteem determines how people put their best Facebook forward
• Robots playing greater role in patient care
• Has 'techspeak' made time-honoured language skills irrelevant in the Internet age?
• Learning Facebook in retirement age
• Interactive health
• Robot mom would beat robot butler in popularity contest
• Sundar named JCMC editor
• Talking tissue boxes: Don't laugh, you really like them
• A flashy bet for Yahoo on a shift in social media
• Bonding with your virtual self may alter your actual perceptions
• Harlem Shake videos show dilemma school officials face
• Virtually there: working remotely
• Eat, live, breathe Internet
• No-so-lasting impressions
• New apps recall details of online past
• Texting's effect on the English language (transcript)
• Comments, traffic statistics help empower bloggers
• Retweeted health messages may not be what patient ordered
• No LOL matter -- Tween texting may lead to poor grammar skills
• Online users have longer timeline
• Looking to connect, more seniors turn to social media
• Best websites balance self-expression and functionality
• A bilion-dollar turning point for mobile apps
• It's not about you Facebook, it's about us
• Online news portals get credibility boost
• Whimsical texting icons get shot at success
• Showcasing the Media Effects Research Lab (TV)
• Focusing on the social, minus the media
• A stream of postcards, shot by phone
• Start-up plans a more personal social network
• Specialization builds trust among Web users
• Experience, privacy guide how people choose online news
• Faculty member to talk at World Expo
• Worldwide ebb for Facebook?
• When interactivity goes overboard
• NSF grant allows researchers to study interactivity in digital media
• Sundar named Distinguished Professor
• Digital divide thwarts online diplomatic efforts
• Is Facebook growing up too fast?
• On Facebook, scholars link up with data
• How not to lose face on Facebook

Chen, C., & Sundar, S. S. (2024). Communicating and combating algorithmic bias: effects of data diversity, labeler diversity, performance bias, and user feedback on AI trust. Human–Computer Interaction, 1–37.

Yang, H., & Sundar, S. S. (2024). Machine heuristic: concept explication and development of measurement scale. Journal of Computer-Mediated Communication, 29 (6).

Chen, C., Lee, S., Jang, E., & Sundar, S. S. (2024). Is your prompt detailed enough? Exploring the effects of prompt coaching on users' perceptions, engagement, and trust in text-to-image generative AI tools. Proceedings of the Second International Symposium on Trustworthy Autonomous Systems (TAS’24), Article No. 9. [Best Paper Award].

Chen, C., Liao, M., & Sundar, S. S. (2024). When to explain? Exploring the effects of explanation timing on user perceptions and trust in AI systems. Proceedings of the Second International Symposium on Trustworthy Autonomous Systems (TAS’24), Article No. 10.

Jung, Y., Bao, J., Norman, M. P., & Sundar, S. S. (2025). Privacy concerns in mobile technology: Can interactivity reduce friction? Computers in Human Behavior, 162, 108421.

Chen, C., Liao, M., Walther, J. B., & Sundar, S. S. (2024). When an AI doctor gets personal: The effects of social and medical individuation in encounters with human and AI doctors. Communication Research, 51(7), 747-781.

Snyder, E. C., Sundar, S. S., & Lee, J.-G. (2024). Reducing reactance to ads by voice assistants: The role of ad customization, ad personalization, and privacy customization. Journal of Interactive Marketing.

Chen, C., Kang, J., Sajjadi, P., & Sundar, S. S. (2024). Preventing users from going down rabbit holes of extreme video content: A study of the role played by different modes of autoplay. International Journal of Human-Computer Studies, 190, 103303.

Jung, Y., Chen, C., Jang, E., & Sundar, S. S. (2024). Do we trust ChatGPT as much as Google Search and Wikipedia? Proceedings of the 2024 CHI Conference on Human Factors in Computing Systems Extended Abstracts (CHI EA ‘24), Article No. 111.

Sundar, S. S., Bellur, S., & Lee, H. M. (2024). Concept explication: At the core of it all. Asian Communication Research.

Liao, M., Sajjadi, P., & Sundar, S. S. (2024). How does VR affect emotional appeal and persuasiveness of gain versus loss-framed messages? Science Communication, 46(3), 276-304.

Sun, Y., Chen, J., & Sundar, S. S. (2024). Chatbot ads with a human touch: A test of anthropomorphism, interactivity, and narrativity. Journal of Business Research, 172, 114403.

Molina, M. D., & Sundar, S. S. (2024). Does distrust in humans predict greater trust in AI? Role of individual differences in user responses to content moderation. New Media & Society, 26(6), 3638-3656.

Gong, Y., Schroeder, A., Pan, B., Sundar, S. S., & Mowen, A. J. (2023). Does algorithmic filtering lead to filter bubbles in online tourist information searches? Information Technology & Tourism, 26, 183-217.

Liao, M., Wang, J., Chen, C., & Sundar, S. S. (2023). Less vigilant in the mobile era? A comparison of information processing on mobile phones and personal computers. New Media & Society.

Jia, H., & Sundar, S. S. (2023). Vivid and engaging: Effects of interactive data visualization on perceptions and attitudes about social issues. Digital Journalism.

Snyder, E. C., Mendu, S., Sundar, S. S., & Abdullah, S. (2023). Busting the one-voice-fits-all myth: Effects of similarity and customization of voice-assistant personality. International Journal of Human-Computer Studies, 180, 103126.

Molina, M. D., Wang, J., Sundar, S. S., Le, T., & DiRusso, C. (2023). Reading, commenting and sharing of fake news: How online bandwagons and bots dictate user engagement. Communication Research, 50 (6), 667-694.

Brinberg, M., Ram, N., Wang, J., Sundar, S. S., Cummings, J. J., Yeykelis, L., & Reeves, B. (2023). Screenertia: Understanding “stickiness” of media through temporal changes in screen use. Communication Research, 50 (5), 535–560.

Sundar, S. S., & Chen, J. (2023). From CASA to TIME: Machine as a source of media effects. In A. Guzman, R. McEwen & S. Jones (Eds.), The SAGE handbook of human-machine communication. Sage Publications.

Sundar, S. S., & Liao, M. (2023). Calling BS on ChatGPT: Reflections on AI as a communication source. Journalism & Communication Monographs, 25 (2), 165-180.

Liao, M., Sundar, S. S., & Rosson, M. B. (2023). Online privacy cues and heuristics. In S. Trepte & P. Masur (Eds.), The Routledge handbook of privacy and social media (pp. 80-88). New York: Routledge.

Chen, C., & Sundar, S. S. (2023). Is this AI trained on credible data? The effects of labeling quality and performance bias on user trust. Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems (CHI ‘23), Article No. 816.

Sun, Y., Drivas, M., Liao, M., & Sundar, S. S. (2023). When recommender systems snoop into social media, users trust them less for health advice. Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems (CHI ‘23), Article No. 818.

Chen, C., Lee, S., & Sundar, S. S. (2023). Interpassivity instead of interactivity? The uses and gratifications of automated features. Behaviour & Information Technology. 43 (4), 717-735.

Lee, S., Moon, W-K., Lee, J-G., & Sundar, S. S. (2023). When the machine learns from users, is it helping or snooping? Computers in Human Behavior, 138, 107427.

Cho, E., Motalebi, N., Sundar, S. S., & Abdullah, S. (2022). Alexa as an active listener: How backchanneling can elicit self-disclosure and promote user experience. Proceedings of the ACM on Human-Computer Interaction, 6, CSCW2, Article 273.

Wu, Y., Sun, Y., & Sundar, S. S. (2022). What do you get from turning on your video? Effects of videoconferencing affordances on remote class experience during Covid-19. Proceedings of the ACM on Human-Computer Interaction, 6, CSCW2, Article 353.

Wang, J., & Sundar, S. S. (2022). Liking versus commenting on online news: effects of expression affordances on political attitudes. Journal of Computer-Mediated Communication, 27 (6).

Chen, C., Cohen, O., & Sundar, S. S. (2022). Differentiating problematic from habitual Instagram use: A uses and grats 2.0 perspective. Social Media + Society, 8 (3).

Molina, M. D., & Sundar, S. S. (2022). When AI moderates online content: effects of human collaboration and interactive transparency on user trust. Journal of Computer-Mediated Communication, 27 (4).

Sundar, S. S., & Lee, E-J. (2022). Rethinking communication in the era of artificial intelligence. Human Communication Research, 48 (3), 379-385.

Liao, Q. V., & Sundar, S. S. (2022). Designing for responsible trust in AI systems: A communication perspective. Proceedings of the 2022 ACM Conference on Fairness, Accountability, and Transparency (FAccT '22), 1257–1268.

Liao, M., & Sundar, S. S. (2022). Sound of silence: Does muting notifications reduce phone use? Computers in Human Behavior, 134, 107338.

Sundar, S. S., Jia, H., Bellur, S., Oh, J., & Kim, H. S. (2022). News informatics: Engaging individuals with data-rich news content through interactivity in source, medium, and message. Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems (CHI ‘22), Article No. 317. [Honorable Mention].

Liao, M., Sundar, S. S., & Walther, J. B. (2022). User trust in recommendation systems: A comparison of content-based, collaborative and demographic filtering. Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems (CHI ‘22), Article No. 486.

Cho, E., & Sundar, S. S. (2022). Should Siri be a source or medium for ads? The role of source orientation and user motivations in user responses to persuasive content from voice assistants. Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems Extended Abstracts (CHI EA ‘22), Article No. 414.

Sun, Y., & Sundar, S. S. (2022). Exploring the effects of interactive dialogue in improving user control for explainable online symptom checkers. Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems Extended Abstracts (CHI EA ‘22), Article No. 417.

Liao, M., & Sundar, S. S. (2022). # facebookdown: Time to panic or detox? Understanding users’ reactions to social media outage. Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems Extended Abstracts (CHI EA ‘22), Article No. 357.

Jia, H., Wu, M., & Sundar, S. S. (2022). Do we blame it on the machine? Task outcome and agency attribution in human-technology collaboration. Proceedings of the 55^th Hawaii International Conference on System Sciences (HICSS’22), 388-397.

Jung, E. H., & Sundar, S. S. (2022). Older adults' activities on Facebook: Can affordances predict intrinsic motivation and well-being? Health Communication, 37(5), 597-607.

Huang, Y., & Sundar, S. S. (2022). Do we trust the crowd? Effects of crowdsourcing on perceived credibility of online health information. Health Communication, 37(1), 93-102.

Cho, E., & Sundar, S. S. (2021). How do we like our online dates—customized or personalized? The differential effects of user vs. system tailoring on date preferences. Computers in Human Behavior, 127, 107037.

Rice, R. E., Sundar, S. S., & Kim, H-S. (2021). The role of technology in health communication: Trends and trajectories. In T. L. Thompson & N. G. Harrington (Eds.), The Routledge handbook of health communication (3rd ed., pp. 381-396). New York: Routledge.

Sundar, S. S., Molina, M. D., & Cho, E. (2021). Seeing is believing: Is video modality more powerful in spreading fake news via online messaging apps? Journal of Computer-Mediated Communication, 26 (6), 301-319.

Chen, C., Krieger, M., & Sundar, S. S. (2021). Smartphones, robots, and social media: aging with communication technologies. In K. W. Schaie & S. L. Willis (Eds.), Handbook of the psychology of aging (9th ed., pp. 139-153). London, UK: Academic Press.

Huang, Y., Sundar, S. S., Ye, Z., & Johnson, A. C. (2021). Do women and extroverts perceive interactivity differently than men and introverts? Role of individual differences in responses to HCI vs. CMC interactivity. Computers in Human Behavior, 123, 106881.

Liao, M., & Sundar, S. S. (2021). How should AI systems talk to users when collecting their personal information? Effects of role framing and self-referencing on human-AI interaction. Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems (CHI ‘21), Article No. 151.

Molina, M. D., Sundar, S. S., Rony, M. M. U., Hassan, N., Le, T., & Lee, D. (2021). Does clickbait actually attract more clicks? Three clickbait studies you must read. Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems (CHI ‘21), Article No. 234.

Chen, J., Chen, C., Walther, J. B., & Sundar, S. S. (2021). Do you feel special when an AI doctor remembers you? Individuation effects of AI vs. human doctors on user experience. Extended Abstracts of the 2021 CHI Conference on Human Factors in Computing Systems, Article No. 299.

Liao, M., & Sundar, S. S. (2022). When e-commerce personalization systems show and tell: Investigating the relative persuasive appeal of content-based versus collaborative filtering. Journal of Advertising, 51 (2), 256-267.

Li, R., & Sundar, S. S. (2021). Can interactive media attenuate psychological reactance to health messages? A study of the role played by user commenting and audience metrics in persuasion. Health Communication, 37 (11), 1355-1367.

Wang, J., & Sundar, S. S. (2022). Are we more reactive to persuasive health messages when they appear in our customized interfaces? The role of sense of identity and sense of control. Health Communication, 37 (8), 1022-1030.

Molina, M. D., & Sundar, S. S. (2021). Effects of digital media technology on health communication. In T. L. Thompson & P. J. Schulz (Eds.), Health communication theory (pp. 300-322). Hoboken, NJ: Wiley/Blackwell.

Brinberg, M., Ram, N., Yang, X., Cho, M. J., Sundar, S. S., Robinson, T. N., & Reeves, B. (2021).The idiosyncracies of everyday digital lives: Using the Human Screenome Project to study user behavior on smartphones. Computers in Human Behavior, 114, 106570.

Molina, M., D., Sundar, S. S., Le, T., & Lee, D. (2021). “Fake news” is not simply false information: A concept explication and taxonomy of online content. American Behavioral Scientist, 65 (2), 180-212.

Cho, E., Sundar, S. S., Abdullah, S., & Motalebi, N. (2020). Will deleting history make Alexa more trustworthy? Effects of privacy and content customization on user experience of smart speakers. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems (CHI ‘20), Paper 424. [Honorable Mention].

Sundar, S. S., Kim, J., Rosson, M. B., & Molina, M. D. (2020). Online privacy heuristics that predict information disclosure. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems (CHI ‘20), Paper 725.

Wang, J., Yang, H., Shao, R., Abdullah, S., & Sundar, S. S. (2020). Alexa as coach: Leveraging smart speakers to build social agents that reduce public speaking anxiety. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems (CHI ‘20), Paper 434.

Cho, E., Kim, J., & Sundar, S. S. (2020). Will you log into Tinder using your Facebook account? Adoption of single sign-on for privacy-sensitive apps. Extended Abstracts of the 2020 CHI Conference on Human Factors in Computing Systems, LBW282.

Wang, J., Molina, M. D., & Sundar, S. S. (2020). When expert recommendation contradicts peer opinion: Relative social influence of valence, group identity and artificial intelligence. Computers in Human Behavior.

Waddell, T. F., & Sundar, S. S. (2020). Bandwagon effects in social television: How audience metrics related to size and opinion affect the enjoyment of digital media. Computers in Human Behavior, 107, 106270.

Sundar, S. S. (2020). Rise of machine agency: A framework for studying the psychology of human-AI interaction (HAII). Journal of Computer-Mediated Communication, 25 (1), 74-88.

Oh, J., & Sundar, S. S. (2020). What happens when you click and drag: Unpacking the relationship between on-screen interaction and user engagement with an anti-smoking website. Health Communication, 35 (3), 269-280.

Molina, M. D., & Sundar, S. S. (2020). Can mobile apps motivate fitness tracking? A study of technological affordances and workout behaviors. Health Communication, 35 (1), 65-74.

Kang, J., & Sundar S. S. (2020). Social robots with a Theory of Mind (ToM): Are we threatened when they can read our emotions?. In P. Novais, J. Lloret, P. Chamoso, D. Carneiro, E. Navarro, S. Omatu (Eds.), Ambient Intelligence – Software and Applications – 10th International Symposium on Ambient Intelligence (ISAmI 2019). Advances in Intelligent Systems and Computing (AISC), 1006, 80-88.

Motalebi, N., Cho, E., Sundar, S. S., & Abdullah, S. (2019). Can Alexa be your therapist? How back-channeling transforms smart-speakers to be active listeners. CSCW’19: Conference Companion Publication of the 2019 conference on Computer Supported Cooperative Work and Social Computing, pp. 309-313.

Le, T., Shu, K., Molina, M. D., Lee, D., Sundar, S. S. & Liu, H. (2019). 5 sources of clickbaits you should know! Using synthetic clickbaits to improve prediction and distinguish between bot-generated and human-written headlines. Proceedings of the 2019 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2019).

Sundar, S. S., & Oh, J. (2019). Psychological effects of interactive media technologies: A human-computer interaction (HCI) perspective. In M. B. Oliver, A. A. Raney & J. Bryant (Eds.), Media effects: Advances in theory and research (4th ed., pp. 357-372). New York: Routledge.

Sundar, S. S., Xu, Q., & Dou, X. (2019). Role of technology in online persuasion: A MAIN Model perspective. In S. Rodgers & E. Thorson (Eds.), Advertising theory (2nd ed., pp. 70-88). New York: Routledge.

Go, E., & Sundar, S. S. (2019). Humanizing chatbots: The effects of visual, identity and conversational cues on humanness perceptions. Computers in Human Behavior, 97, 304-316.

Molina, M. D., & Sundar, S. S. (2019). Technological affordances can promote misinformation: What journalists should watch out for when relying on online tools and social media. In J. E. Katz & K. K. Mays (Eds.), Journalism and truth in an age of social media (pp. 182-197). New York: Oxford University Press.

Sundar, S. S., & Kim, J. (2019). Machine heuristic: When we trust computers more than humans with our personal information. Proceedings of the 2019 Conference on Human Factors in Computing Systems Proceedings (CHI’ 19), Paper 538.

Gambino, A., Kim, J., & Sundar, S. S. (2019). Digital doctors and robot receptionists: User attributes that predict acceptance of automation in healthcare facilities. Proceedings of CHI’19 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’19), LBW0387.

Sundar, S. S., Kim, J., & Cho, E. (2019). Where in the cloud is my data? Location and brand effects on trust in cloud services. Proceedings of CHI’19 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’19), LBW2512.

Gambino, A., & Sundar, S. S. (2019). Acceptance of self-driving Cars: Does their posthuman ability make them more eerie or more desirable? Proceedings of CHI’19 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’19), LBW2513.

Molina, M. D., Gambino, A., & Sundar, S. S. (2019). Online privacy in public places: How do location, terms and conditions and VPN influence disclosure? Proceedings of CHI’19 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’19), LBW2616.

Zhang, B., & Sundar, S. S. (2019). Proactive vs. reactive personalization: Can customization of privacy enhance user experience? International Journal of Human-Computer Studies, 128, 86-99.

Sundar, S. S., Gambino, A., & Kim, J. (2019). Smart but nosy: Gratifications of ubiquitous media that threaten our privacy. In E. Downs (Ed.), The dark side of media and technology: A 21st century guide to media and technological literacy. New York: Peter Lang.

Ellison, N., French, M., Litt, E., Sundar, S. S., & Trieu, P. (2018). Without a trace: How studying invisible interactions can help us understand social media. In CSCW '18: Companion of the 2018 ACM Conference on Computer Supported Cooperative Work and Social Computing, 129–132.

Kim, J., Gambino, A., Sundar, S. S., Rosson, M. B., Aritajati, C., Ge, J., & Fanning, C. (2018). Interface cues to promote disclosure and build community: An experimental test of crowd and connectivity cues in an online sexual health forum. Proceedings of the ACM on Human-Computer Interaction, Vol. 2, CSCW, Article 90. ACM, New York, NY.

Liu, B., & Sundar, S. S. (2018). Should machines express sympathy and empathy? Experiments with a health advice chatbot. Cyberpsychology, Behavior, and Social Networking, 21 (10), 625-636.

Liu, B., & Sundar, S. S. (2018). Microworkers as research participants: Does underpaying Turkers lead to cognitive dissonance? Computers in Human Behavior, 88, 61-69.

Jung, E. H., & Sundar, S. S. (2018). Status update: Gratifications derived from Facebook affordances by older adults. New Media & Society, 20 (11), 4135-4154.

Oh, J., Bellur, S., & Sundar, S. S. (2018). Clicking, assessing, immersing and sharing: An empirical model of user engagement with interactive media. Communication Research, 45 (5), 737-763.

Chen, T-W., & Sundar, S. S. (2018). “This app would like to use your current location to better serve you”: Importance of user assent and system transparency in personalized mobile services. Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems (CHI’18), Paper No. 537.

Peña, J., Rosson, M. B., Ge, J., Jeong, E., Sundar, S. S., Kim, J., & Gambino, A. (2018). An exploration of design cues for heuristic-based decision-making about information sharing. In G. Chowdhury, J. McLeod, V. Gillet & P. Willett (Eds.), Transforming digital worlds: iConference 2018, Lecture Notes in Computer Science, 10766, 677-683.

Sundar, S. S., Cho, E., & Wang, J. (2018). Interacting with mobile media. In K. Norman & J. Kirakowski (Eds.), Handbook of human-computer interaction (pp. 615-639). Malden, MA: Wiley-Blackwell.

Wang, R., & Sundar, S. S. (2018). How does parallax scrolling influence user experience? A test of TIME (Theory of Interactive Media Effects). International Journal of Human-Computer Interaction, 34 (6), 533-543.

Sundar, S. S., Kang, J., & Oprean, D. (2017). Being there in the midst of the story: How immersive journalism affects our perceptions and cognitions. Cyberpsychology, Behavior and Social Networking, 20 (11), 672-682.

Jung, E., Walden, J., Johnson, A., & Sundar, S. S. (2017). Social networking in the aging context: Why older adults use or avoid Facebook. Telematics and Informatics, 34, 1071-1080.

Waddell, T. F., & Sundar, S. S. (2017). #thisshowsucks! The overpowering influence of negative social media comments on television viewers. Journal of Broadcasting & Electronic Media, 61 (2), 393-409.

Sundar, S. S., Kim, J., & Gambino, A. (2017). Using theory of interactive media effects (TIME) to analyze digital advertising. In S. Rodgers & E. Thorson (Eds.), Digital advertising: Theory and research (pp. 86-109). New York: Routledge, Taylor & Francis Group.

Bellur, S., & Sundar, S. S. (2017). Talking health with a machine: How does message interactivity affect attitudes & cognitions? Human Communication Research, 43 (1), 25-53.

Sundar, S. S., Jung, E., Waddell, T. F., & Kim, K. J. (2017). Cheery companions or serious assistants? Role and demeanor congruity as predictors of robot attraction and use intentions among senior citizens. International Journal of Human-Computer Studies, 97, 88-97.

Oeldorf-Hirsch, A., & Sundar, S. S. (2016). Social and technological motivations for online photo sharing. Journal of Broadcasting & Electronic Media, 60 (4), 624-642.

Kang, H., & Sundar, S. S. (2016). When self is the source: Effects of media customization on message processing. Media Psychology, 19 (4), 561-588.

Wang, R., Yang, F., Zheng, S., & Sundar, S. S. (2016). Why do we pin? New gratifications explain unique activities in Pinterest. Social Media + Society, 2 (3), 1-9.

Waddell, T. F., Zhang, B., & Sundar, S. S. (2016). Human-computer interaction. In C. R. Berger & M. E. Roloff (Eds.), International Encyclopedia of Interpersonal Communication. Malden, MA: Wiley.

Sundar, S. S., Bellur, S., Oh, J., Jia, H., & Kim, H. S. (2016). Theoretical importance of contingency in human-computer interaction: Effects of message interactivity on user engagement. Communication Research, 43 (5), 595-625.

Xu, Q., & Sundar, S. S. (2016). Interactivity and memory: Information processing of interactive versus non-interactive content. Computers in Human Behavior, 63, 620-629.

Oh, J., & Sundar, S. S. (2016). User engagement with interactive media: A communication perspective. In O’Brien & P. Cairns (Eds.), Why engagement matters: Cross-disciplinary perspectives of user engagement in digital media (pp. 177-198). Switzerland: Springer International Publishing.

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.

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.

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.

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.

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.

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.

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: Developments in theory and practice (2nd ed., 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.

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/to...

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/to...

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.... 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.

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—part of Learning reconsidered: Education in the digital age—Communications, convergence and the curriculum. 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.