Chapter 15, entitled Psychological Disorders, goes into the realm of most common psychological disorders such as anxiety, phobias, depression, ADHD, bipolar disorder, schizophrenia, and psychopathic disorder - to name a few. The chapter covers statistics, misconceptions, symptoms, and explanations of such disorders.
What I found most interesting about the chapter weren't any of the actual disorders, but the Culture-Bound Syndromes that were not mentioned in the Chapter. The psychological disorders that we may experience in our Western world, are far from what people in other countries/cultures experience. There are syndromes that are specific to parts of the world such as Alaska, Latin America, Africa, and Asia. The one that I found most interesting is Windigo - a morbid state of anxiety with fears of becoming a cannibal, common to Native Americans as well as some parts of Canada.
Figure 15.3 was also fairly interesting, demonstrating how many people commit suicide on certain areas of the Golden Gate Bridge.