Chapter three in the psychology book goes over various topics involving our nerves, brain, and memory in correlation to how it all ties in with psychology. The chapter goes in depth with each subtopic and gives examples as well to explain why the subtopic is important in understanding psychology. An example of an important subtopic would be the brain. The human brain helps in the function of our thoughts, behavior, and feelings (Lilienfeld, 2010). Another thing that I found interesting is that each part of our brain contributes to how our mind works. For example, the cerebral cortex allows us to visually see what is in front of us. If one side was to be impaired it will affect the person's visual intake of what they are seeing (Lilienfeld, 2010). I think this is important to know because psychology focuses a lot on how the human mind works. This information is helpful for a psychologist to understand why a person may act the way they do.