The book "Proactive Behavior as an Object of Psychological Research" offers a comprehensive analysis of the topic of proactivity and proactive behavior from the perspectives of philosophy and psychology. It summarizes existing research findings and presents various approaches to classifying forms of proactive behavior. The author, Aleksandr Erzin, highlights the essential personality components that influence the development of proactivity in individuals. Additionally, various psychodiagnostic methods are introduced that can be used to investigate specific personality traits in the context of proactive and reactive behavior. This work is aimed at a broad audience, including practicing psychologists, psychotherapists, educators, and psychology students, as well as professionals in the fields of business and management who wish to explore the psychological foundations of proactive behavior.