The psychoanalytical theory of object relations along with the subsequent theory of structural changes served as basis for the following research. The intrapsychic field of personality’s object relations is formed in the process of internalization of significant objects, relationships and their corresponding affects. The following article is dedicated to empirical testing of the main assumptions underlying the psychoanalytic theory of structural change. The objective of this research was to evaluate in a structured way the dynamics of reorganization of object relations and intrapsychic structures of the personality of the subject undergoing psychoanalysis. The evaluation was based on the method of differentiated semantic categories. The results of the semantic analysis of the dynamics of intrapsychic changes confirmed main hypothesis: namely that in the process of psychoanalysis there is a reorganization of internal object relations; psychoanalytic work brings about intrapsychic transformations in personality, specifically, the indicator of the psychic structure Ego increases while at the same time the indicators of psychic structures Id and Super-Ego decrease.

The attempt is made to consider P.Yа. Galperin’s studies in the context of L.S. Vygotsky’s cultural-historical psychology. The idea of succession of Galperin’s school to Vygotsky’s one is substantiated by the example of internalization studies. P.Yа. Galperin’s theory is presented as a sample of non-classical psychology.