I know quite a lot on the topic already. However, I have a class assignment in which I am allowed to write on any topic involving gender, and I decided to write about gender identity and expression in children (This topic I chose because I have very clear memories of my own identifying as female and expressing myself as/ thinking of myself as both male and female as a child, and its interesting.). One of various questions I posed for my paper is exactly how the identity is formed. Is it nature, nurture, or both. Any opinions are well appreciated, but if anybody finds links to good articles or knows of a book/documentary that approaches the subject is preferred, because, as interested as I am in the topic and your personal opinions, my class requires I use more scholarly sources. Most of the research I'll do myself; I just thought asking some people here might be a good idea as well.