Chodorow draws on Freud's idea of intraspsychic structures to understand the developmental differences between girls and boys. Freud explains that there are three parts to an individual: the id, the ego, and the super-ego. These parts produce rigid boundaries in the internal workings of our brains and impact our interactions in society. Chodorow uses this intrapsychic structure to explain that the internal workings of males and females are structurally different. Therefore, developmental differences are not inherent, rather these differences are produced through socialization.