About the Editor S. SHYAM SUNDAR, PhD, Stanford University, USA, is Distinguished Professor and Founding Director of the Media Effects Research Laboratory at The Pennsylvania State University, USA. Sundar was among the first to publish refereed research on the psychological effects of digital media interfaces and has been identified as the most published author of Internet-related research in the field during the medium's first decade. A frequently cited source and former chair of the Communication & Technology division of the International Communication Association, Sundar is currently editor-in-chief of the Journal of Computer Mediated Communication.

• Biographical Notes xPreface xviiiAcknowledgments xxPart I Theoretical Overviews 11. Interpersonal and Hyperpersonal Dimensions of Computer-Mediated Communication 3Joseph B. Walther, Brandon Van Der Heide, Artemio Ramirez, Jr., Judee K. Burgoon, and Jorge Peña2. Group Identity, Social Influence, and Collective Action Online: Extensions and Applications of the SIDE Model 23Russell Spears and Tom Postmes3. Toward a Theory of Interactive Media Effects (TIME): Four Models for Explaining How Interface Features Affect User Psychology 47S. Shyam Sundar, Haiyan Jia, T. Franklin Waddell, and Yan HuangPart II Source Orientation: Avatars, Agents and Androids 874. Examining Perception and Identification in Avatar-mediated Interaction 89Kristine L. Nowak5. Effects of Visual Cues on Social Perceptions and Self-Categorization in Computer-Mediated Communication 115Eun-Ju Lee and Soo Youn Oh6. Social Effects of Virtual and Robot Companions 137Nicole C. Krämer, Astrid M. Rosenthal-von der Pütten, and Laura Hoffmann7. Telepresence and Apparent Agency in Human–Robot Interaction 160Leila Takayama8. Psychological Aspects of Technology Interacting with Humans 176Johan F. HoornPart III Technological Affordances and Social Interaction 2039. Social Network Site Affordances and Their Relationship to Social Capital Processes 205Nicole B. Ellison and Jessica Vitak10. The Social Psychology of Mobile Communication 228Kathleen M. Cumiskey and Rich Ling11. Real or Ersatz? Determinants of Benefits and Costs of Online Social Interactions 247Melanie C. Green and Jenna L. Clark12. Deception with Technology 270Jeffrey T. Hancock and Jamie Guillory13. Immersive Virtual Environments and the Classrooms of Tomorrow 290Cody O. Karutz and Jeremy N. BailensonPart IV Adoption, Use and Abuse of Communication Technologies 31114. The Psychology of the Diffusion and Acceptance of Technology 313Arun Vishwanath15. Adolescent Development and Psychological Mechanisms in Interactive Media Use 332Elly A. Konijn, Jolanda Veldhuis, Xanthe S. Plaisier, Marloes Spekman, and Anouk den Hamer16. The Psychology of Interactive Media Habits 365Robert LaRose17. Online Addictions: Gambling, Video Gaming, and Social Networking 384Mark D. Griffiths and Daria J. KussPart V Exposure, Experience and Evaluations of Digital Media 40518. Selective Exposure in the Communication Technology Context 407Silvia Knobloch-Westerwick, Axel Westerwick, and Benjamin K. Johnson19. Affording Control: How Customization, Interactivity, and Navigability Affect Psychological Responses to Technology 425Sriram “Sri” Kalyanaraman and Bartosz W. Wojdynski20. Psychological Approaches to Credibility Assessment Online 445Miriam J. Metzger and Andrew J. FlanaginPart VI Good Technology for Better Health 46721. Trust and Engagement in Online Health: A Timeline Approach 469Elizabeth Sillence and Pam Briggs22. Computer-Mediated Support for Health Outcomes: Psychological Influences on Support Processes 488Kevin B. Wright23. Using Digital Games to Promote Health Behavior Change 507Debra A. Lieberman24. Leveraging Psychology of Virtual Body for Health and Wellness 528Giuseppe Riva, Antonios Dakanalis, and Fabrizia Mantovani25. Treating Emotional Problems with Virtual and Augmented Reality 548Rosa M. Baños Rivera, Cristina Botella Arbona, Azucena García-Palacios, Soledad Quero Castellano, and Juana Bretón LópezIndex 567