The book on interdisciplinary value theory by Steffen Steinert is out. The book was written as part of the ValueChange project and it offers an interdisciplinary introduction to value theory. It reviews how researchers in four academic disciplines – psychology, sociology, anthropology, and philosophy – understand value and value change. It offers an introduction for researchers in these disciplines about how other disciplines define, theorize, and investigate value(s) to foster interdisciplinary communication. The book identifies and summarizes similarities and differences of value theory between the academic disciplines and highlights promising areas where each discipline can learn from the others.