Retaining the broad yet practical approach of previous editions, this popular textbook has been fully updated with research and theory from the last two decades to guide students through the concepts and principles of group dynamics. It now includes a brand-new introductory chapter, three new chapters on diversity and inclusion, creativity and design, and virtual groups, and dedicated chapters on communication and perception. Each chapter features in-class 'Try this!' activities that promote understanding of practical applications, new case examples from real-world organizations, and enhanced learning objectives to guide readers' learning experience. Hundreds of new studies have been added throughout, and examples consider the effects of the COVID-19 pandemic, remote working, the MeToo movement, social media, climate change, and political polarization. Suitable for both undergraduates and first-year graduates, this textbook is supported by an online test bank, PowerPoint lecture slides, activity worksheets, and suggested additional resources.