"Psychiatrists owe much of their income to bad parents and teachers."

It sounds about right. No telling if evidence is possible.

Succeeding generations can recover from these things. Also from bad psychiatrists. I'm pretty sure that my grandfather made life so difficult for my mother (who was born not as the son he wanted on the third try and just having daughters) that she 1) became a psychiatric social worker probably partly to learn about her own issues and 2) after her mother died when mom was 5, was raised by that angry father and was lacking a number of skills she might have gained from being around her mother. We (her four kids) were aware of these shortcomings as we grew up, and as we look back after raising our own children. It took a lot of work on our parts and basically learning to tell our mother "I don't want to talk about it" and walk away when there was an argument. She kept using the shrinky stuff on us, trying to tell us why we were doing or saying things, and that is no way to try to control your children or to take seriously their issues in an argument.