an extended psychological model that includes four socially destructive subclinical personality traits: narcissism, Machiavellianism, psychopathy, and sadism. This concept develops the ideas of the classic Dark Triad, adding to it an element of deliberate cruelty and enjoyment of the suffering of others. The Dark Tetrad describes a persistent pattern of exploitative, manipulative, and aggressive behavior that does not reach the level of a psychiatric disorder, but has a significant negative impact on interpersonal relationships and social systems. In general, the number of studies devoted to the structure of the potential Dark Tetrad, its place in the structure of personality and connections with other phenomena is currently actively increasing.