A rich guide for understanding the evolving research landscape in psychology, including changes to core research ethics concepts such as informed consent, privacy, and risk of harm. This handbook offers a thorough and authoritative discussion of the ethical issues in conducting research with human participants. Each chapter poses an important ethical question, considers the relevant factors for addressing the question, and presents guidance for investigators. Topics include: informed consent, deception, risk/benefit ratio, data security, authorship, conflicts of interest, fairness and equity when collaborating with researchers in resource-poor settings, and more. While psychological research with humans still takes place in the investigator’s laboratory and field, there is an increasing trend toward multiple investigators and interdisciplinary research projects owing to the complexity of modern research questions. Furthermore, technology has changed dramatically and affects all psychological researchers, whether they are working individually or in large teams. With its comprehensive scope and practical guidance, this book will serve as an invaluable aid to understanding and navigating the ethical challenges that confront new and seasoned researchers alike.