Kaplan draws heavily on his forty years of experience as a clinician, researcher, and professor of child psychiatry to make the argument that bipolar disorder in children and adolescents is incorrectly diagnosed and incorrectly treated. As he explains, the dramatic rise in this particular diagnosis is not based on scientific evidence, nor does it reflect any new discovery or insight about the etiology or treatment of the disorder. In fact, the opposite is the case: the scientific evidence against the existence of child bipolar disorder is so strong that it is difficult to imagine how it has gained the endorsement of anyone in the scientific community.