The second edition of this best-selling textbook continues to offer a simple, systematic, step-by-step guide to defining research problems and then solving them using a methodological model created by the authors. Using the authors' PATH model ('problem', 'analysis', 'test' and 'help'), the textbook illustrates how to apply primarily social psychological theory to a wide range of social problems. It offers guidance on how to define a problem; conduct a theory-based analysis; develop an explanatory model; set up and execute a research project to test the model; and develop an intervention. With real-world case studies, end of chapter exercises and interviews with leading social psychologists, Applying Social Psychology will strengthen your confidence in the application of psychological theory in any research context, either lab work or project work, but especially in social psychology or applied social psychology. Written in the same engaging and accessible way, this second edition offers: 1. A new Appendix with examples of PATH model applications 2. An extended glossary 3. Case studies from organizational, health, and environmental psychology 4. Recent applied social psychology research 5. More focus on applied evolutionary psychology 6. Interventions to reduce intergroup prejudice and manage diversity in the workplace 7. Social network analysis and social media as research tools. This is a highly practical text, which can be used by introductory and advanced level students who want to learn how to analyze practical problems and develop solutions based upon social psychological theory and research.