%0 Journal Article %T The problem of a holistic approach to the study of a child in Russian child psychology in the 20-30s %A Uruntaeva, G.A. %K holistic approach to the study of the child, preschool childhood, principles of the study of the child, social environment, observation, psychological characteristics, diagnosis of mental development %J Journal of Pedagogical Studies %D 2020 %N 5 %P 10 %I INFRA-M Academic Publishing LLC.