Disagreeable Children:

 J. Peterson:

"But if you don't get them successfully domesticated, tamed roughly speaking, by the time they're four, their peers reject them."

"And if your child is a horrible little monster because you're afraid of disciplining or you don't know how to do that properly ... then they are going to experience nothing but rejection from other children and false smiles from other parents and adults."

"then you're throwing the child out there into a world where every single face that they see is either hostile or lying and that's not something that's going to be particularly conducive to the mental health or the well-being of your child."