Narcissist's Grandiosity as Cognitive Distortion, Bias (Dunning-Kruger Effect)

Grandiosity in narcissism is a derivative phenomenon rooted in cognitive deficits and a flawed reality test rather than a primary, uncontrollable force. This distortion creates a profound gulf between a narcissist’s actual abilities and their inflated self-perception, leading to a reliance on cognitive biases like the Dunning-Kruger effect. A primary manifestation of this is "omniscience," where the narcissist claims absolute authority over all subjects to mask deep-seated ignorance. To maintain this god-like image, they employ subterfuges such as quoting non-existent sources or "intellectual prestidigitation." While aging may lead to a more refined or narrowed focus of expertise, the underlying defensiveness remains. Any challenge to this self-imputed infallibility is perceived as a narcissistic injury, triggering rage and the devaluation of others to protect a precariously balanced personality.