What do you think of parents who shout at one child but not the other?

Oh becouse that one needs it more then the other.

Parents treat their kids differently from the time they were born. It's life, it is the way it works. Just wish they would own it though, as opposed to saying no we don't, we treat you all equally. BS.

Favoritism.  When my oldest began playing soccer..........I saw a lot of this.  I just hated it and NEVER did this to my 3.

Maybe they are not misbehaving 

No one should be shouting at all.... 

I think the parent has one child who can't follow the rules.

No.

What, you think they should shout at the one who ISN'T misbehaving and being a pain in the ***, just to make it "fair?"

No.  It is the younger sibling being smart enough not to make the same mistakes as the older one...no reason to get yelled at

There you go, using big words.

Yes, and its also bad parenting