This book is the first extensive encyclopedia for the field of cyberpsychology, focusing on the study of digital behaviour and the psychological phenomena associated with human-technology interaction. As one of the world's most rapidly developing sub-disciplines of psychology, cyberpsychology has grown across the research and education landscape for the last thirty years. This text consolidates extant knowledge developed during that time to provide a historical record as well as a current resource for anyone interested in the field. Its diverse entries cover theory, research and application, providing a vital resource for anyone interested in the factors shaping our digital and technological behaviours, and the impacts of these behaviours on individuals and society.