Grandiosity refers to an unrealistic sense of superiority—a sustained view of oneself as better than others that causes the narcissist to view others with disdain or as inferior—as well as to a sense of uniqueness: the belief that few others have anything in common with oneself and that one can only be understood by a few or very special people. It also occurs in reactive attachment disorder.
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Grandiosity is chiefly associated with narcissistic personality disorder, but also commonly features in manic or hypomanic episodes of bipolar disorder.
In narcissism
Pathological grandiosity has been associated with one of the two subtypes of Narcissistic Personality Disorder. (Gabbard, 1989) Characteristics of the narcissist-grandiose subtype (as opposed to the narcissist-vulnerable subtype) include:
The differences between grandiose and vulnerable narcissist subtypes have been studied (Dickinson & Pincus, 2003):
This overall finding confirms past theory and research that suggests that these [grandiose subtype] individuals lack knowledge of the impact they have upon others, and thus, have an unrealistic view of themselves in relation to others (Gabbard, 1989, 1998; Kernberg, 1975; Kohut, 1971, 1977). Indeed, this very lack of insight into their impact upon others is what incited Gabbard (1989) to enlist the label “oblivious narcissists” to describe their social presentation and distinguish them from their vulnerable counterparts. Grandiose narcissistic individuals expect another’s immediate and undivided attention, and are oblivious to the effect their direct demands of entitlement have on others. And, by virtue of their ability to maintain the grandiose self through self-enhancement, grandiose narcissistic individuals are less susceptible than their vulnerable peers to the chronic emotional consequences of threats to entitled expectations (e.g., distress, lowered self-esteem, interpersonal fearfulness).The grandiosity section of the Diagnostic Interview for Narcissism (DIN) (Second edition) is as follows:
In mania
In mania grandiosity is typically more pro-active and aggressive than in narcissism. The manic character may boast of future achievements or exaggerate their personal qualities.
They may also begin unrealistically ambitious undertakings, before being cut down, or cutting themselves back down, to size.
In psychopathy
Grandiosity features in Factor 1 Facet 1:Interpersonal in the Hare Psychopathy Checklist-Revised (PCL-R) test.
Reality-testing
A distinction is made between individuals exhibiting grandiosity, which includes a degree of insight into their unrealistic thoughts (they are aware that their behavior is considered unusual), in contrast to those experiencing grandiose delusions, who lack this capability for reality-testing. Some individuals may transition between these two states, with grandiose ideas initially developing as "daydreams" that the patient recognises as untrue, but which can subsequently turn into full delusions that the patient becomes convinced reflect reality.
Psychoanalysis and the grandiose self
Otto Kernberg saw the unhealthily grandiose self as merging childhood feelings of specialness, personal ideals, and fantasies of an ideal parent.
Heinz Kohut saw the grandiose self as a normal part of the developmental process, only pathological when the grand and humble parts of the self became decisively divided. Kohut's recommendations for dealing with the patient with a disordered grandiose self were to tolerate and so re-integrate the grandiosity with the realistic self.