Lack of dopamine is one of the main reasons for aggressive human behavior. This is proven by recent research, which to a certain extent has turned the general ideas about the nature of anger and irritation upside down. Traditionally, clinical psychology approaches the issue of determining the causes of outbursts of anger from the point of view of not only the social component, in particular the state in society, a person’s environment and his upbringing, but and various triggers in his brain. According to modern views, one of the most significant such triggers that affects what is commonly called “temperament” in everyday life is dopamine. And although the neurobiology of aggression is not yet very well understood, it is now considered officially proven that this substance is involved in the relationship between neurotransmitters such as serotonin and the neurotransmitters of aggressive behavior. The conclusion suggests itself that outbursts of anger can be caused not only by an excess of dopamine, but also by its deficiency. The results of many psychological studies were largely unexpected when compared with already existing information. Individuals with a more functional dopaminergic system demonstrated moderate aggressiveness in a competitive situation and were able to pay more attention to the actual process of the game. At the same time, subjects with low functionality of the dopaminergic system were more often distracted by fraudulent behavior. They were also more prone to aggression and evasion of given rules in general. And it was found that excessive levels of dopamine can cause aggressive behavior, but in this case, the degree of aggression has its own ceiling, which for most people does not border on deviant behavior. At the same time, in people with low dopamine levels, on the contrary, aggression can become open and excessive, and sometimes virtually uncontrollable..