Now published by Sage Recipient of the 2025 Textbook & Academic Authors Association (TAA) McGuffey Longevity Award This award celebrates textbooks that have stood the test of time by demonstrating excellence over multiple editions. The new Twelfth Edition of Social Psychology by Saul Kassin, Steven Fein, and Hazel Rose Markus captures the excitement of this dynamic and responsive field in our ever-changing world. The authors highlight the most exciting and important foundational and contemporary research, while every chapter also uniquely investigates the influences of culture and social class. In this enthusiastic introduction to social psychology, students delve into their own passion drivers, from favorite sports teams to social media to their own political perspectives, dispelling misconceptions and understanding the scientific foundations that explain our daily interactions and social behaviors. This textbook shows students how social psychology— its theories, research methods, and basic findings—has never been more relevant or more important.