Can you think of any scientific reason to defend why that would be the case Mania? If not then it's not nature it's nurture. Which is my point. And somewhat ironic you used the term "macho" wouldn't ya say? :)

Here you have your science my dear marxist ideologue: girls have tear channels about 4 times larger than boys. Also testosterone prevents/helps to stop crying.

But you really don't care about science. Because you are marxist ideologue and not scientist.

Just next time when firemen rescue people trapped in house demand that in 50% cases they rescue men first. Fight this female hurting culture it is 2015 for goodness sake!!! Not that human genome haven't changed in any significant way in the past 10,000 years

> Can you think of any scientific reason to defend why that would be the case

Yes. Because they are girls. I don't know what deluded world, or ultra PC world, you live in where boys and girls are the same, or act the same.

The existence of girls that don't scream, and boys that do, despite no difference in nurture is the evidence that it's entirely nature.

It's not absolute "all girls scream", it's simply that more girls than boys do so - much more. And there is nothing whatsoever wrong with that, or with noticing that.

Embrace the differences!