Psychological theories of the clinical kind tend to come and go, like medical advice about the healthiness of whole milk or carbohydrates.  The control exerted by mere parental units on children in a Venn diagram in which one circle's area is occupied by said parents and the other enormous---much larger---circle encompasses advertising, school, politics, friends, enemies, money, style and other various cultural pressures---totally under control of parents /end sarcasm. This notion has been regularly sold tot he public by the likes of Dr. Spock and Dr. Phil---always with the doctor appendage.  Proponents of Free Will, we God-fearing citizens, morality clearly taught by us and not inherited, never just "made up," definitely not until you're eighteen, or something... there was Doctor Nichtklein as well---at the ever-swirling vortex of social opinion of psychology that generated a psychology of social opinion.  His fame only came along after a while.  "Because I Said So," was a book that sold millions during the proverbial backlash to the freedom of environmental parental methods born of the forsaken decade of free love---and disco.  It was only later that honest developmental psychological experiments proved that Dr. Nichtklein's attitudes towards infant and toddler consciousness were basically crazy---or maybe more importantly: completely unproven and therefore wrong.  After a period of rejections from significant psychological journals, he needed to find another way to "utilize" science to create another best-seller.  It was the only way he would pay for the house.

And he did!  And the world was grateful for it.