Theme: Deception

–Q: “What is the name for the psychological behavior of believing one has special knowledge whether divine or otherwise?”–

Answer
The psychological behavior you are describing is often referred to as gnosticism in a more philosophical or religious context, or specifically in psychology, it might be linked to what is known as delusions of grandeur or megalomania.

1) Gnosticism historically refers to a diverse set of religious beliefs emphasizing personal spiritual knowledge (gnosis) over orthodox teachings. In a modern psychological context, this can sometimes manifest as a belief in having special, often divine, knowledge.
2) Delusions of grandeur, a type of delusion, involve believing that one possesses exceptional abilities, wealth, or fame. When this belief extends to thinking one has special, divine, or secret knowledge, it can be part of this delusional spectrum.
3) Megalomania is an older term that describes a psychological state where someone has an obsessive need for power, accompanied by delusions of grandeur, which might include the belief in possessing unique or divine insights.

These terms might not perfectly encapsulate the behavior you’re describing, but they are closely related concepts in psychology and philosophy that address the belief in having unique or special knowledge.

THE SPECTRUM OF GRANDIOSITY DISORDERS
If a person exhibits grandiosity but does not show further dissociation from reality (i.e., does not have delusions or other psychotic symptoms), the most likely diagnosis within the psychological framework would be:

1) Narcissistic Personality Disorder (NPD):
Key Features:
– A grandiose sense of self-importance (e.g., exaggerates achievements and talents, expects to be recognized as superior without commensurate achievements).
– Preoccupation with fantasies of unlimited success, power, brilliance, beauty, or ideal love.
– Belief in being “special” and unique, and can only be understood by, or should associate with, other special or high-status people (or institutions).
– Requires excessive admiration.
– Sense of entitlement.
– Interpersonally exploitative behavior.
– Lack of empathy.
– Envious of others or believes others are envious of them.
– Arrogant, haughty behaviors or attitudes.

– Distinction from Psychosis: In NPD, the grandiosity is a part of the personality structure rather than a break from reality. These individuals might believe in their own superiority but do not typically experience the severe perceptual distortions, delusions, or hallucinations characteristic of psychotic disorders.

2) Histrionic Personality Disorder might also be considered if the grandiosity is accompanied by excessive attention-seeking behaviors, but the focus on grandiosity is more central to NPD.

3) Bipolar Disorder could be in the differential diagnosis, particularly if the grandiosity is episodic and not a consistent trait. However, without other bipolar symptoms like mood swings, increased energy, or changes in sleep patterns, NPD would be more fitting.

4) Antisocial Personality Disorder might coexist with grandiosity, but the focus here would be more on a pervasive pattern of disregard for and violation of the rights of others, with grandiosity as one of several traits.

In diagnosing, clinicians would look for a pervasive pattern of grandiosity in thought and behavior, alongside other criteria from the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition) for NPD, ensuring that these traits are not better explained by another mental disorder or due to substance use or another medical condition.

It’s also important to note that personality traits exist on a spectrum, and not everyone with grandiose traits will meet the full criteria for a personality disorder. They might simply have narcissistic traits without the disorder.