Nah, I have girls and there's definitely a biological difference there even at a young age. They're much more sensitive to more subtle negative feedback in a way that boys just aren't.

You have some data point at home so you extrapolate on the entire population?

Well, having both girls and boys, I can concur.

While I hold the same conclusion as you, individuals chiming in to concur based on their own experience is nothing more than a way to validate what certain people of the time & place commonly believe to be true.

E.g. if people were apt to believe girls preferred green peppers more often than boys, there will always be plenty who say "Well, having both girls and boys, I can concur". It could be true, it could be false, or the cause could be something else. E.g., because people think there are certain differences it shapes differences in development which lead to some of them actually being more common for nothing more than the sum of environmental factors - even if those biases only started as misconceptions.

Whichever it actually is, there will usually be large segments of the populations who would observe it to be conflicting things from an individual at-home view and it takes a lot of work & really good data to be able to make a meaningful claim about what and why differences exist.

There a line after which too much science fanboyism can get a person to tie themself in knots.

Science fanboyism is just in understanding what you do and don't know, not eschewing the possession of beliefs or actions made from them.

Theory vs practice.

One can practice the theory of practicality without needing to be ignorant of how uncertain they are as they do so.

We just have millenia of history, experience in every country and culture, and countless scientific papers on the matter, but please go on with your question...

And that's why boys should be beaten when they misbehave?

I'm not saying boys should be beaten whenever they misbehave, but girls are definitely more tuned into the way they're being perceived by others.

With girls, you'll get the same corrective effect from an uncomfortable grimace as you would a wooden spoon.

I'll also add since this is about bullying, the type of bullying behaviours girls engage in is much less physical and a lot more underhanded. It's much harder to correctly identify who's the victim and who's the perpetrator.

I think that's the wrong question.

Kids need "an approach" that helps them learn necessary boundaries. That approach differs by gender (I have both boys and girls and that's obvious)