EN
The study deals with the conception of intersubjectivity in primary stages of child development according to Colwyn Trevarthen and Daniel N. Stern. In the first part, it is pointed to theoretical and empirical background of mentioned authors who incorporate themselves into „infant research” sphere. In the second part, the conception of primary and secondary intersubjectivity according to Trevarthen is presented and the development of interpersonal self is described. Trevarthen is a proponent of the theory of inborn intersubjectivity. He indicates that children come to the world biologically predisposed to enter the contacts with other persons and to monitor mental states and emotions of other persons. Subsequently, the definition of intersubjectivity according to Stern and the process of self reorganization which is realized from the first months of life till approximately four years of children’s life is presented. Stern describes more maturation periods of self: emerging self, core self, subjective self, verbal self, and narrative self. All types of self remain active the whole life of an individual as interpersonal fields. The process of self reorganization ensures the continuity of intersubjective relations.