'From social media to sensors to AI, this book offers a brilliant tour of how the Big Data revolution is reshaping psychology. Accessible, inspiring, and grounded in real research problems, it walks students through everything from hands-on skills like web scraping, to big-picture theory testing, and even thoughtful discussions of ethics all presented with incredible clarity by one of the field's most inspiring new voices.' Timothy Brady, University of California, San Diego 'Exceptionally timely and comprehensive, Bainbridge's textbook deserves a place in every curriculum for behavioral methods. The chapters enhanced with interactive features and thought-provoking ethical questions are so engaging that they make me want to teach the course. And whether or not you work with Big Data, this is essential reading for all.' Marvin M. Chun, Yale University 'Combining conceptual depth and accessible writing, Bainbridge offers a timely contribution with a comprehensive overview of the field, covering definitions of Big Data in psychology and expertly navigating its key sources, methods, and analytical approaches. It addresses foundational topics, such as neuroimaging tools and statistical techniques, as well as emerging and contemporary discussions, including natural language processing, the development of large language models, and their applications in psychological research. It will resonate with a wide audience, from curious undergraduates to seasoned researchers looking to deepen their understanding of Big Data and its potential to reshape the psychological sciences.' Nemanja Vaci, University of Sheffield