Book excerpt: Research Design in Clinical Psychology helps students to achieve a thorough understanding of the entire research process – developing the idea, selecting methods, analyzing the results, and preparing the written scientific report. Drawing examples from clinical research, health, and medicine, author Alan E. Kazdin offers detailed coverage of experimental design, assessment, data evaluation and interpretation, case-control and cohort designs, and qualitative research methods. In addition to new pedagogical tools that guide students through the text, the Fifth Edition offers expanded coverage of key topic areas, such as cultural issues, scientific integrity, and recent changes in the publication and communication of research.