Research believes yes and they are still looking for it.
No, not necessarily.
Vain narcissist and/or sociopath
yes they can, in my experience the child's narcissism is a result of being raised by a narcissist ,
The Defining characteristic of the narcissist is grandiosity. The narcissist is more likely to be attention seeking, envious and to desire admiration.The defining characteristic of the sociopath/psychopath is callousness. The sociopath/psychopath is more likely to engage in illegal activity, to be aggressive, impulsive and deceitful.
Sociopath.
The simplest answer is YES. He has ISSUES
There are technical differences, but it is largely a matter of degree. Neither is likely to ever be a decent partner.
I think they'd say it's not the best thing in the world, those can be tough people to live with.
Narcissism & Sociopathy are on the same spectrum ALL Sociopaths are also Narcissists NOT all Narcissists are Sociopaths, though. The spectrum only runs one way.
If you were involved with one and he/she is a chameleon and fools others (only for a short time usually) then worry about getting on with your own life and realizing that others can look after themselves. Sociopath/narcissist will hang themselves every time ... they just have to open their mouths!
Narcissistic Personality Disorder and Psychopathy can be -- and often are -- components of child abuse. They are both clinically-defined conditions with certain criteria that must be met in order for a diagnosis to be made.
My older sister is a sociopath.
You don't. Get as far away from a sociopath as you possibly can.