Torsten Reimer is a Professor of Communication and Psychology and Director of the Communication and Cognition Lab at Purdue University, USA.

Ernest S. Park is a social psychologist and an Associate Professor at Grand Valley State University, USA.

Joseph A. Bonito is a Professor of Communication at the University of Arizona, USA.

1. Introduction: The Role of Communication in Group Scholarship Part I: Foundations of Group Communication 2. The Importance of Groups 3. Theories of Group Communication: Guidelines for their Application 4. Researching Small Discussion Groups 5. The Use of Technology in Groups Part II: Components and Processes of Group Communication 6. Characteristics of Successful Groups and Teams 7. Groups as Systems 8. Diversity in Groups 9. Leading Groups and Teams 10. Managing Conflict within Groups 11. Relational Communication in Groups 12. Language and Social Influence 13. Participation Involvement and Information Sharing 14. Transactive Memory and Learning 15. Group Decision Making 16. Creativity and Innovation in Groups 17. Social Networks and Groups Part III: Contexts of Group Communication 18. Groups in Organizations 19. Function of Groups within Society 20. Online Communities and Big Data 21. Groups in Health Contexts: Online Health Communities 22. Groups in Medicine 23. Communication in Sports Teams 24. Communication in Human-AI Teaming