<p>The article carries out a general level cross-cultural analysis of the intelligence of modern adolescents and analyzes the structural components of the individual’s intellectual activity considering their environment. The main methodological basis is the informational approach presented by R. Stenberg and E. Hant. We applied the Brief Orientative Test and School Test of Mental Development to study the level of intellectual activity. The sample consisted of 251 adolescents from Moscow (Russia) and Ismayilli city (Azerbaijan). The empirical study<strong> </strong>and further mathematical analysis confirmed the hypothesis that cultural environment has a significant influence on the general level of intelligence and its structural components. We explain the higher level of intellectual development of Ismayilli adolescents’ personalities by the minimal amount of distracting objects in the sociocultural environment that affect the adolescent. This, the socio-cultural environment has an influence on the formation of the adolescent in intellectual and individual development.</p>