Book excerpt: The Routledge International Handbook of Psychobiology provides authoritative, cutting-edge research across the range of areas that fall under the umbrella of psychobiology. The handbook comprises 30 chapters which are organized into seven sections: the physical environment; how psychobiological processes regulate how we respond and cope; stress and anxiety; managing and enhancing mood and cognition; substance use and misuse; sleep; and psychobiology and human development. Each of the chapters is authored by experienced and active researchers in their field who provide authoritative reviews of the latest developments in psychobiology. It is essential reading for both established researchers in the field of psychobiology, as well as advanced students wishing to learn more about both the historical foundations and latest developments in this rapidly growing field.