The content covered in this chapter will allow you to score more points on the MCAT—and to prepare for your clinical clerkships in psychiatry. This chapter is unique in that it covers not how the mind normally works, as we see in the other chapters in this book, but rather how the mind works when it is functioning abnormally. The MCAT tests critical thinking; one common way to do this is to ask what happens when a system—like the mind—is not functioning normally. Thus, this chapter covered very high-yield information that is very likely to appear on the MCAT because it connects all three subjects of the Psychological, Social, and Biological Foundations of Behavior section. In the next chapter, we move away from the individual as we begin to explore social psychology; from there, we’ll continue expanding outward as we move into sociology.