OP was referring to observations at friend's houses. Presumably they'd be aware of any underlying issues.
Judging random people on the street isn't wise. Judge your friends and loved ones instead! :D
I mean, do you even know the full story at a friend's house? I guess it depends on how closely you know them, and whether they've confided any developmental issues they're children are dealing with.
I mean, do you even know the full story at a friend's house? I guess it depends on how closely you know them, and whether they've confided any developmental issues they're children are dealing with.