At the beginning of this chapter, we read a example about the success of the film The War of the Worlds. After that, the book introduce a new concept:social psychology. As we all know, social is consist of many people.People have effects on the others. Such as on behavior,attitude, beliefs. These influence has both bad and good sides. Social psychology is a science to study how people affect others.
I find the concept is interesting and important because we all a part of social. We all influence or are influences the others. For example, there is an adage in China says that:" If you close to the vermilion,you will change to the red; if you close to the ink, you will change to the black. " That means you may change to that kind of person who you often stay with. Social psychology can help us to understand this phenomena and help us form a nice character. So that's the reason why I think the concept of social psychology is so important that people should know it.