Dp and I keep having this conversation about what makes boys and girls different from the very outset (apart from physiological things obviously ) and wondering whether certain often remarked on differences like girls talk earlier than boys / boys are better eaters etc. are just cliches or if true are due to nature or nurture. I tend to think now that biology plays an important part but dp is convinced that up-bringing is more important a factor. What do you guys think in relation to your own kids and others you've come across?