I'm skeptical when studies like that make claims about "intrinsic" gender differences because boys and girls are treated differently by adults pretty much as soon as they're born. Girls are told their dress is so pretty, boys are told they're so big, etc. I think of it kind of like, "Hey, don't you want to play with trucks? You really want to play with trucks, don't you?" And then — big surprise — two-year-old boys like trucks.
I'm skeptical when studies like that make claims about "intrinsic" gender differences because boys and girls are treated differently by adults pretty much as soon as they're born. Girls are told their dress is so pretty, boys are told they're so big, etc. I think of it kind of like, "Hey, don't you want to play with trucks? You really want to play with trucks, don't you?" And then — big surprise — two-year-old boys like trucks.