I don't think most parents base their decisions on what they've actually learned about their kids. Rather, many conform to social expectations, regardless of how well that works for their kids.

When you have a child, it is because a home has already been created, a stability, isn't it? Since I became a father, I have given my son a certain amount of freedom, based on good communication.

Msd0457890

It's a good question? There have been several, largely baseless, hysterias in the US that led to parents thinking their surroundings were much less safe than they actually are.

Undisciplined

alter_native

Free-Range Parenting: A Mom’s Guide to Raising Independent Kids

Why do these types of measures exist? In South America my parents let me play for hours; I was an independent child.