Humans today have made progress in various fields. Education, technology, trade, various scientific research, industrial progress, communication, leisure progress, computer, etc. The more this list grows, the less it will fall. New discoveries and treatments are emerging in the medical field as well. All this progress is due to human effort, intellect, obsession with new things, curiosity, experimentation . Of course, even though the development of human society is taking place through scientific research and technological progress, these changes are having an effect on the society as an individual, as an electronics, as a society. For example, with the advancement of industry, large factories, machinery, production methods, need to complete work on time, work planning increased the stress on the human mind and it had to bear the adverse effects of increasing stress. The structure of society, the attitude affects the mind of the individual. If the society is traditional, it will definitely affect the progress of the individual. A person's anatomy, age range affects a person's mental strength. The situation is constantly changing. It is also important to think about how a person will cope with this changing situation and how he or she will behave. These factors are considered in the theoretical psychology of psychology. The behavior of an individual in society is of great importance. Because it has a big impact on the life of the individual and the society.Humans are social animals. As soon as a person is born, he comes in contact with many other people and the socialization of the person begins. The environment (environment) around a person plays a big role in shaping the personality. We are greatly influenced by the values, rules, and norms of the group. That is, social psychologists study the effects of grouping on individuals. Social psychology is more interested in the areas of individual prejudice, leadership, attitudes, etc. In this science, 'person' is the focus of study. In sociology, on the other hand, 'group' is the focal point. For example, a sociologist is interested in studying a family or a particular group. But both branches are complementary and interdependent. Another area of ​​interest of social psychologists is the individual's sensitivity to other persons'. That is, the way a person feels about other people, that is, the way that person interprets the behavior of other people, his behavior happens. For example, two friends met. The second friend did not arrive on time. Then the first one thought, I don't want to meet another. So the cure for not keeping in touch.. The real reason for not having another friend may be different.

But according to the first interpretation of his absence, his behavior happened (for example, not having much further contact). For example, when a leader makes an appeal, thousands of people are motivated by the appeal. Research in social psychology is also useful for solving social problems. For example, there are some suggestions on how to reduce aggression how to reduce prejudice. Also, more and more research is being done in that regard. Social psychologists also work to develop techniques such as aptitude measurement, group-interaction measurement, and sociometry. These techniques are also used to analyze the attitudes or opinions of the masses in the political, economic, trade, etc. areas. Also, different cultures affect human behavior and different cultures affect each other. This is happening on a large scale in the current era of globalization due to the media. A new branch has emerged to study these results. It is known as Cultural Cross Cultural Psychology '.