Although a lot of research has been done on the human mind, especially since the 1800s, it has managed to preserve its real mystery. The reason for this is that it contains a structure that is too complex to be explained with a single definition. In the process, after the opinion that the mind cannot be examined differently from behavior became dominant, the science of psychology began to take place in our lives. The science of psychology, which examines the causes and consequences of human behavior from this dual perspective, has made undeniable contributions to the history of humanity.