Think there may be some truth though that many boys live in the present and don't overthink things like relationships/rows at this age - whereas girls are more sensitive to stuff and have longer term or more anxious fall outs etc.
Why would you put this down to gender rather than personality though?
My DTD is boisterous, sociable, plays wrestling with her friends, is brave and doesn't easily get scared, doesn't overthink relationships/rows whereas my DTS is sensitive, scared, doesn't like rough play at all, gets very offended easily, cries easily etc
My ASD DD (obviously) doesn't deal well at all with social situations but this is due to ASD not gender. Her older brother is a straight mix of stereotypically boy and girl attributes, he is highly emotionally intelligent for example, quite sensitive but secure in himself, very sociable, is happy helping littler children or playing wild games with older kids.
All my children have different personalities but they are an even split of boy, girl, boy, girl.
It is creepy to me to think biology influences personality in a child that has no adult hormones etc people's ideas about gender really do influence children's development though which to me is absolutely shocking.
I thought I was a boy until I went to school and found out I wasn't. That happened because of uniform and because I had 'boy' interests, why can't children just be children why do there have to be 'girl' things and 'boy' things?