**Summary:** This is the second, completely revised and updated edition of the textbook "Forschungsmethoden und Evaluation" by Prof. Dr. Jürgen Bortz and Dipl.-Psych. Nicola Döring. The book provides an overview of empirical research methods and evaluation in the fields of humanities and social sciences. It includes 66 illustrations and 60 tables, and is published by Springer. The second edition expands on the first by emphasizing evaluation research, which focuses on the scientific monitoring and assessment of social interventions. Key changes include the addition of a new chapter on evaluation research, as well as updates to existing chapters on quantitative data collection, qualitative methods, and hypothesis generation. The book is structured to help students and researchers understand the theoretical and practical aspects of empirical research, including the design of studies, data collection methods, and statistical analysis. It also addresses ethical considerations and the importance of validity and reliability in research. The second edition includes a more reader-friendly layout with smaller, digestible sections and cartoons to enhance understanding. The book is intended for students and researchers in psychology and related fields, but also serves as a valuable resource for students in other social sciences. The authors thank readers for their feedback and welcome corrections for the second edition. The book is accompanied by an appendix with a glossary, literature sources, statistical software, research funding information, tables, and solutions to exercises.**Summary:** This is the second, completely revised and updated edition of the textbook "Forschungsmethoden und Evaluation" by Prof. Dr. Jürgen Bortz and Dipl.-Psych. Nicola Döring. The book provides an overview of empirical research methods and evaluation in the fields of humanities and social sciences. It includes 66 illustrations and 60 tables, and is published by Springer. The second edition expands on the first by emphasizing evaluation research, which focuses on the scientific monitoring and assessment of social interventions. Key changes include the addition of a new chapter on evaluation research, as well as updates to existing chapters on quantitative data collection, qualitative methods, and hypothesis generation. The book is structured to help students and researchers understand the theoretical and practical aspects of empirical research, including the design of studies, data collection methods, and statistical analysis. It also addresses ethical considerations and the importance of validity and reliability in research. The second edition includes a more reader-friendly layout with smaller, digestible sections and cartoons to enhance understanding. The book is intended for students and researchers in psychology and related fields, but also serves as a valuable resource for students in other social sciences. The authors thank readers for their feedback and welcome corrections for the second edition. The book is accompanied by an appendix with a glossary, literature sources, statistical software, research funding information, tables, and solutions to exercises.