Contributions to the history of psychology: LXXXV. Jean Piaget, student of Pierre Janet (Paris 1919-1921).

This article provides information about an important period of Piaget's formative years, those he spent in Paris from 1919 to 1921, during which he came into contact with eminent members of the French scientific and philosophical community of the time. Among these was the psychiatrist and psychologist Pierre Janet, whose genetic approach to the psychology of behaviour and ideas about the hierarchical organization of psychological functions converged with Piaget's early scientific interests and provided Piaget a conceptual framework within which to work and develop his own project of studying the genesis of knowledge.

Sexual differentiation in children's drawings of pregnancy.

An analysis is reported of drawings of pregnancy by children of both sexes, with the hypothesis that it would be possible to determine sex-related characteristics of the drawings. Clear sexual differentiation in male and female children's representations of pregnancy was revealed by to features: the location of the baby inside the body of the mother and the tendency in some of the boys to "masculinize" the figure, of the expectant mother.

Development of internal body image from childhood to early adolescence.

The study aimed at providing a psychogenetic characterization of the developmental patterns through which the graphic representations of the inside of the body progress, and at testing the developmental hypothesis of a progressive integration of genital parts into the internal body image. The drawings of the inside of the body by 360 children of both sexes and of age 5 to 10 yr., and by 213 early adolescents, boys and girls of ages 11 to 14 yr.

[Anatomical knowledge in relation to the female genitalia in adolescent girls].

The purpose of the research was to analyse drawings of the inside of the body and the female genital apparatus produced by 275 female adolescents aged 11 to 18, with particular interest in the quality and structural properties of the drawings and in the female genital elements best known to the subjects. The results reveal the presence of a progressive process of integration of the genital parts into the representation of the inside of the body and show how knowledge of the female genitals evolves in the age group considered.