The role of attachment to mother (AM) in formation of children’s and adolescents’ attitude to world around and to themselves is analyzed in the article. AM is considered as a complex system of internal regulation and one of the bases of mental development typology. Results of a series of the researches are described, relating secure/insecure adolescents’ AM to their worldviews, in particular to their emotional attitude towards family, teachers, peers, friends, school, and also to the future, the country, people and the world as a whole.