NEW TO THIS EDITION: Discussion of the philosophy of science as the underlying foundation of methodological thinking includes naturalism and constructionism. Expanded focus on research ethics and the importance of samples in social research helps researchers produce higher quality research that adheres to common standards. Explicit attention is given to both designing research and evaluating the research of others. KEY FEATURES: An interdisciplinary approach with examples in criminology/criminal justice, sociology, political science/international relations, and social work gives readers a range of ways to comprehend the material. A balanced account of theoretical perspectives provides students with an unbiased and informed presentation of the material. An emphasis on conveying the logic and general principles of social research design is reflected in minimal technical details for maximum clarity.