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The Gift of Introversion

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Relationships<br />

Personality Disorders<br />

As <strong>of</strong> 2002, there were over fifty published studies relating the FFM to personality<br />

disorders. Since that time, quite a number <strong>of</strong> additional studies have expanded on this<br />

research base and provided further empirical support for understanding the DSM<br />

personality disorders in terms <strong>of</strong> the FFM domains.<br />

In her review <strong>of</strong> the personality<br />

disorder literature published in<br />

2007, Lee Anna Clark asserted that "the<br />

five-factor model <strong>of</strong> personality is widely<br />

accepted as representing the<br />

higher-order structure <strong>of</strong> both normal and<br />

abnormal personality traits". However, other<br />

researches disagree that this model is<br />

widely accepted (see the section<br />

Critique below) and suggest that it<br />

simply replicates early temperament<br />

research. Noticeably, FFM publications<br />

never compare their findings to<br />

temperament models even though temperament<br />

and mental<br />

disorders (especially<br />

personality disorders) are thought to be based on the<br />

same neurotransmitter imbalances, just to varying degrees.<br />

<strong>The</strong> five-factor model was claimed to significantly predict all ten personality disorder<br />

symptoms and outperform the Minnesota Multiphasic Personality Inventory (MMPI) in<br />

the prediction <strong>of</strong> borderline, avoidant, and dependent personality disorder<br />

symptoms. However, most predictions related to an increase in Neuroticism and a<br />

decrease in Agreeableness, and therefore did not differentiate between the disorders<br />

very well.<br />

Common Mental Disorders<br />

Average deviation <strong>of</strong> five factor personality pr<strong>of</strong>ile <strong>of</strong> heroin users from the population<br />

mean. N stands for Neuroticism, E for Extraversion, O for Openness to experience, A<br />

for Agreeableness and C for Conscientiousness.<br />

Converging evidence from several nationally representative studies has established<br />

three classes <strong>of</strong> mental disorders which are especially common in the general<br />

population: Depressive disorders (e.g., major depressive disorder(MDD), dysthymic<br />

disorder), anxiety disorders (e.g., generalized anxiety disorder (GAD), post-traumatic<br />

stress disorder (PTSD), panic disorder, agoraphobia, specific phobia, and social<br />

phobia), [145] and substance use disorders (SUDs).<br />

Page 39 <strong>of</strong> 160

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