The article researches is devoted to five core personality traits. Evidence of this theory has been grow-ing for many years, beginning with the research of D. W. Fiske (1949) and later expanded upon by other researchers including Norman (1967), Smith (1967), Goldberg (1981), and McCrae & Costa (1987). The «Big five» are broad categories of personality traits. While there is a significant body of literature supporting this five-traits model of personality, researchers don’t always agree on the exact labels for each dimension. It is important to note that each of the five personality traits represents a range between two extremes. For ex¬ample, extraversion represents a continuum between extreme extraversion and extreme introversion. In the real world, most people lie somewhere in between the two polar ends of each dimension. In the world of psychology research, personality is a little more complicated. The definition of personality can be complex, and the way it is defined can influence how it is understood and measured. According to the researchers at the Personality Project, personality is: «the coherent pattern of affect, cognition, and desires (goals) as they lead to behavior» (Revelle, 2013). In the words of the American Psychological Association (APA), personality is: «individual differences in characteristic patterns of thinking, feeling, and behaving» (APA, 2017). Key words: the «Вig five» questionnaire, personality, personality traits.