The authors represent a diagnostic method, testing ways of interpersonal cognition. They describe an attempt to study the ways of interpersonal perception at adolescents of 14—15 years old. Respondents’ ways of interpersonal cognition were correlated with their school advancement and data of tests on intellect, anxiety and sociometry choice. It was shown that the method, described at this article, has a differentiating strength and it can be used for studying personality development in further researches.