How did Heinz Kohut explain the childhood origins of adult narcissism?

Heinz Kohut posited that adult narcissism originates from a developmental arrest—a failure to progress beyond a normal, necessary stage of childhood development due to unempathetic parenting.1

According to Kohut, a healthy self matures through interactions with caregivers who provide two essential functions:
* Mirroring: Providing approval and validation that fosters a realistic sense of self.
* Idealization: Serving as omnipotent role models whose own realistic limitations allow the child to internalize attainable, healthy ideals.

When parents are unempathetic and fail to provide this support, the child’s development halts. Consequently, the individual’s self remains grandiose and unrealistic, while they continue to idealize others as a way to maintain their own fragile self-esteem through association. In this view, narcissism is not merely a defense mechanism but a consequence of the child being deprived of the necessary social environment to achieve psychological maturity.1