Be very careful in deciding which behaviors are innate differences and which are cultural. You'll want to do comparative anthropology or inject half your subject with hormones if you want to start talking about it on a scientific basis. I recall reading about a study where they took a bunch of women and injected half with saline and the other half with testosterone. For each half they then told half the women that they had been injected with testosterone and the other half that it was saline. In a later negotiation task the women who had been told they'd received testosterone but who hadn't were noticeably slower to come to an agreement and the group which had received testosterone without knowing it reached and agreement faster, with the other two groups in between.