Similarly, the chapter on the neurobiology of mood disorders by Gillespie, Garlow, Binder, Schatzberg, and Nemeroff in the section on major psychiatric disorders is an excellent overview of the neuroendocrine axes and neurotransmitter systems that make depression a fascinating combination of psychological, neurobiological, and somatic symptoms. But the chapter is actually a compact synthesis, and to understand fully the subject matter covered by the chapter would require an extensive background or careful reading of the references, which are comprehensive. Serious students of depression will want to read the chapter to make sure that they understand the full breadth of this research.