I'm bookish, clumsy and unsociable, not the kind of girl that was popular with boys as a teenager. Since boys aren't going to like me for the reasons they usually like girls, maybe I need to make myself noticeable for other reasons.
OMG, I totally relate!
I guess that has relevance in the sense of being a 'survival technique'.
Apart from the obvious anatomical differences, how different do you think men are from women? Do the genders think differently? Are we good at different things? If you do think there are differences, what do you think causes them: anatomy, chemistry, upbringing, peer pressure?
I believe there is some scientific evidence (although I can't quote anything) that there are some differences in the ways the brain works in males and females due to men having higher testosterone levels and women having higher oestrogen levels, which affect some brain functions.
This seems reasonable to me, but I have to admit I really dislike some of the easy stereotypes that thinking leads to (rather oddly, since I'm not in the least a 'feminist' type) - perhaps because, like you Tsuyoiko, I find that I have rather more of a 'masculine brain'.
I do believe this may well be attributable to higher levels of testosterone, either when developing in the womb or in the present... I have heard that higher levels of testosterone in the womb can cause someone to have a longer ring finger than first finger, and mine is definitely longer... of course I have some womanly traits (!) but I also have certain more 'masculine' traits as well which are associated with higher testosterone levels. Most noticeably these include: a strong 'focusedness' and inability to 'multi-task', and (supposedly linked to this trait) good spatial awareness and being good at parking the car (!); aggressive tendencies often manifesting themselves in physical ways; a tendency to physically 'aggressive' sexual behaviour e.g. biting, scratching etc; and being a 'systematiser' rather than an 'empathiser'.
So in answer to your question, I think that to a certain extent it can be said that, very broadly speaking men and women 'think differently', but as individuals differ so much this is a far from infallible guide, and 'feminine men' and 'masculine women' exist so widely and on such a variable sliding scale that it's not really possible to generalise in any very useful way.
I think the main basic differences are caused by a combination of chemistry, anatomy and evolution, probably in about equal measure - a case of nature designing us to fulfil certain roles as efficiently as possible. These traits are then gradually adapted to the changes that take place in society - for example, men don't have to be literally 'hunters' so much nowadays, nor women 'gatherers', so traits that reinforced these roles have either lessened or been channelled in other directions.
Upbringing and peer pressure also have their part to play, and I think form a kind of second tier of affecting factors over and above anatomy and chemistry. These are, of course, tied in with the society and culture. Socio-cultural conditions are, I think, a kind of interlocking 'web' connecting the anatomy, chemistry and evolution 'level' with the upbringing and peer pressure 'level' - all of which combine to cause the differences.
Phew! Not sure if I'm making any sense...!