Why when someone behaves improperly in public people often assume that the one behaving improperly is stupid?

Question

Have you noticed when someone behaves improperly (for example a kid insulting his/her teacher, a boy touching a woman behind her back, loud neighbors, rude employees at a store, someone who yells in the traffic, an abusive boss, a spoiled kid, a man and woman kissing improperly in public, a man who lets the toilet seat up, kids who yell at everything) people automatically assume that person is rude, mean, or is a j.er.k, without ever thinking that person might be mentally unstable, or challenged so that's why they act that way?

Why is that?

I personally noticed those kind of people who behave improperly most of them have mental issues or their parents abused them, they are challenged and therefore not educated, they don't behave improperly at purpose, they do it because they have problems and those problems don't allow them to act maturely.

Your toughts, please.

Answer 1

Stupid is as stupid does. If it looks like a duck, walks like a duck, and quacks like a duck, it's probably a duck.

Answer 2

because most people are mindless drones, and think what everyone wants them to think. usually the the people who act like there better than all those people you described are usually the crazy one

Answer 3

Most people do not take the time to analyze stupid behavior, including me. People will make assumptions, correct or not, based on the behavior they see, they will rarely do a psychological assessment of the motive behind the behavior.