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The dark path to antisocial personality disorder
Date:2/7/2012

Philadelphia, PA, February 7, 2012 With no lab tests to guide the clinician, psychiatric diagnostics is challenging and controversial. Antisocial personality disorder is defined as "a pervasive pattern of disregard for, and violation of, the rights of others that begins in childhood or early adolescence and continues into adulthood," according to the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) of the American Psychiatric Association.

DSM-IV provides formal diagnostic criteria for every psychiatric disorder. This process may be guided by rating scales that measure the traits and features associated with a personality disorder. But, until now, no one has studied the dimensional structure associated with the DSM antisocial personality disorder criteria.

Dr. Kenneth Kendler of Virginia Commonwealth University and colleagues examined questionnaire and genetic data from adult twins. They found that the DSM-IV criteria do not reflect a single dimension of liability but rather are influenced by two dimensions of genetic risk reflecting aggressive-disregard and disinhibition.

"When psychiatrists, as clinicians or researchers, think about our psychiatric disorders, we tend to think of them as one thing one kind of disorder a reflection of one underlying dimension of liability," said Dr. Kendler. "This is also true of genetics researchers. We tend to want to identify and then detect 'the' risk genes underlying disorder X or Y."

Kendler added, "What is most interesting about the results of this paper is that they falsify this inherent and rather deeply held assumption. Genetic risk factors for antisocial personality disorder are not one thing. Rather, the disorder, as conceptualized by DSM-IV, reflects two distinct genetic dimensions of risk."

"The findings from this study make sense. The distinction between the two sets of heritable traits contributing to antisocial personality diso
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Contact: Rhiannon Bugno
Biol.Psych@utsouthwestern.edu
214-648-0880
Elsevier
Source:Eurekalert

Page: 1 2

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