The article presents the results of empirical research of the dynamic characteristics of speech experience of a person. We are developing theoretical concept of a person’s speech experience, which is viewed as a system, the essence of which is the process and the product of handling and presenting the results of interaction between the subject and environment in the form of speech, which makes it possible to organize a person’s speech acquisition of the world. The investigation presents the results of studying the external structure of speech ex­perience in two age groups – children of preschool age (n = 194) and children undergoing the period of «emerging adulthood» (n = 386). The study was carried out with the application of factor analysis. We described the main content and interpretation of the obtained factors. Results of factor comparison in the two age groups allowed us to specify the dynamics of external structure development. The devel­opment is implemented through integration, connection of separate parts into one whole. At that, the parts are not merging with each other mechanically, they change dialectically and obtain new quality. Generalization of separate parts leads to appearance of three factors in adulthood, which have clear orientation towards mediation of a per­son’s speech acquisition of the world.