This book is an innovative resource designed to bridge the gap between traditional psychological research methods and contemporary data science techniques. This book provides a comprehensive introduction to using Python for analyzing psychological data, enabling researchers, educators, and students to harness the analytical power of data science within their work. The volume is structured into four parts, encompassing programming skills, data preparation, advanced data processing, and the interpretation of results, each reinforced with practical examples and case studies. The content starts with the basics of Python programming, tailored specifically for psychological research applications. It then progresses to the sophisticated analysis of psychological data using statistical models, machine learning, and artificial intelligence, with a strong focus on Python's capabilities in these areas. This includes detailed discussions on Confirmatory Factor Analysis, machine learning algorithms like SVMs, and innovative techniques such as metaheuristics and simulations. This book is particularly timely as psychological research becomes increasingly data-driven, necessitating a deeper understanding of complex datasets and the development of more sophisticated analytical tools. "Data Science in Psychology" addresses this need by providing not only the technical skills required but also a deep understanding of how these techniques can be applied specifically to psychological research. The primary audience, including psychology researchers, academics, and advanced students, will find this book invaluable for integrating data science into their daily toolkit, thus leveling up their research capabilities and broadening their methodological approaches in an era where interdisciplinary skills are an added value.