Here is a look at the type of mental disorder each Myers Briggs personality might display based on their cognitive (dys)functions.
INTP/ISFJ: Schizotypal Personality Disorder.
Ti/Si or Si/Ti. Most commonly in INTP dom/tert loops (Ti+Si), resulting in totally giving up on attempting to obtain the social/interpersonal connections that inferior Fe drives them to unconsciously desire. Schizotypal people are seen (and typically see themselves) as having such unusual thoughts and behaviors that widespread social acceptance is nearly impossible. Ti thinks, “I cannot find any logical explanation for social rituals” and Si reinforces this self-isolating, risk-averse behavior by constantly reminding the user: “Remember how badly this went last time you tried?”
If Ne were doing its job, it would remind the user to continue experimenting to find a new approach. In the ISFJ version, Si becomes ultra risk-averse and refuses to try anything new or unfamiliar. If Fe were doing its job, the ISFJ would learn that some risk is necessary in order to uphold obligations to others and avoid living in total solitude. Deep down, these types really do want social connection and ritual (Fe), but have found themselves so poor at it that they simply give up trying.
- Ideas of reference (excluding delusions of reference).
- Odd beliefs or magical thinking that influences behavior and is inconsistent with subcultural norms (e.g., superstitiousness, belief in clairvoyance, telepathy, or “sixth sense”; in children and adolescents, bizarre fantasies or preoccupations).
- Unusual perceptual experiences, including bodily illusions .
- Odd thinking and speech (e.g., vague, circumstantial, metaphorical, overelaborate, or stereotyped).
- Suspiciousness or paranoid ideation.
- Inappropriate or constricted affect.
- Behavior or appearance that is odd, eccentric, or peculiar.
- Lack of close friends or confidants other than first-degree relatives.
- Excessive social anxiety that does not diminish with familiarity and tends to be associated with paranoid fears rather than negative judgments about self.
Individuals with Schizotypal Personality Disorder experience interpersonal relatedness as problematic and are uncomfortable relating to other people. Although they may express unhappiness about their lack of relationships, their behavior suggests a decreased desire for intimate contacts. As a result, they usually have no or few close friends or confidants other than a first-degree relative.
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- How Each MBTI Type Uses Extraverted Feeling
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