somat
We demonstrate that narcissism in children is cultivated by parental overvaluation:
No we don't. One minute narcissism is about 'over valuation' next minute its about parental neglect!

Narcissism is genetic. The child might be neglected, it might be over valued, it might be treated well.
Why is my middle sister a narcissist and other siblings not? Why? when we were all emotionally neglected?
Its not about nurture, tho nurture is hugely important it does not cause narcissism or psychopathy. They are born that way.

just because freud said something that does not make it untrue. we still believe many things to be true that go back 100 years. einstein, anyone?
Eiensteins theories are constantly tested, if they are still believed it is because science has proven them.

He’s been dead for nearly 70 years, but Sigmund Freud’s provocative theories are still a huge part of psychology, neuroscience, and culture — this despite the fact that many of his ideas were mindboggingly, catastrophically wrong.

Freud just won’t go away because he is credited for kindling a revolution. He began a different way of looking at the human condition.
Why Freud Still Matters, When He Was Wrong About Almost Everything