Does Dysfunction Of The Prefrontal Cortex Lead Antisocial Behavior?

According to studies led by King’s College researchers, it has been confirmed that “psychopathy is a distinct subgroup of antisocial personality disorder (ASPD)” (Gregory et. al n.p) and similarly to psychopathy, the more severe ASPD behavioral patterns are, the symptoms can be referred to as sociopathic or psychopathic. Furthermore, according to Nigel Blackwood, Ma, MD.MRCPsych, “MRI scans...found that psychopaths had structural brain abnormalities in key areas of their ‘social brains’” (Gregory et. al n.p). The areas of the brain, in which are deficient in psychopaths, are important when comprehending an individual emotions’, intentions, and moral

Modern biology is focused more on understanding behavior, like violence and crime, through research on indicators and influences. Rather than attempting to determine a single root cause, researchers are discovering markers of predisposition and identifying factors of risk. In a recent interview about his new book, The Anatomy of Violence: The Biological Roots of Crime, criminologist and professor at the University of Pennsylvania, Adrian Raine asserts that there is a “biology of violence” that should not be ignored; “Just as there’s a biological basis for schizophrenia and anxiety disorders and depression… there’s a biological basis also to recidivistic violent offending” (Gross, 2013).

This article tries to sum up the causes of Antisocial Personality Disorder. Though, researchers have not found an exact cause of Antisocial Personality Disorder (Martens, 2000). Antisocial Personality Disorder is known to be directed toward specific behaviors and criminal act instead of looking at personality traits and psychopathological aspects (Martens, 2000). People that develop Antisocial Personality Disorder are more likely to suffer from substance abuse disorder, anxiety, depression, and schizophrenia (Martens, 2000). Researchers have done different studies especially with brain injuries, which could trigger

However, more recently, a study led by King’s College London has claimed that there are differences between the brains of psychopaths and other criminal offenders diagnosed with antisocial personality disorder. Dr. Nigel Blackwood who led the research is quoted as saying “We describe those without psychopathy as 'hot-headed' and those with psychopathy as ‘cold-hearted’.” This statement shows a clear distinction between what should be interpreted as a lack of self-control and ability to repress impulses and what should be diagnosed as psychopathy.
The study took MRI scans of 66 men, two thirds of which were offenders who had been diagnosed with antisocial personality whilst the other third were non-offenders considered to not have any personality disorders. Of the 44 offenders, 17 met the diagnosis criteria for psychopathy (ASPD+P) assessed by the guidelines stated in the DSM-IV. Researchers saw that the members of the study diagnosed as psychopaths had notably less grey matter in areas associated with moral behaviour and understanding other peoples’

Antisocial Personality Disorder is a very rare disorder. The criteria to be diagnosed with Antisocial Personality Disorder has been changed in the Diagnostic and Statistical Manual of Mental Disorders throughout many years. The rareness of this disorder can be considered beneficial in the world because of the way people diagnosed with it become and what they do to others. Many people diagnosed with antisocial personality disorder find their self in prison. A variety of causes pertain to this disorder. Very few treatments of this disorder seem to work of this that has been tested. Researchers are still working on a better way to treat this disorder. The defense mechanisms associated with antisocial personality disorder are quite common and the same during the course of diagnosis.

To be considered antisocial is to isolate oneself from general social conditions and demonstrate behaviors that deviate from the social societal norm. Antisocial Personality disorder describes an individual that lacks values and habitually violates societal standards in regards to ethics and social behavior. Individuals with this disorder can be described to lack empathy, act impulsively, and have flagrant disregard for other people. It is hard for them to form engage in positive social exchanges or maintain relationships with others. It was only until the early twentieth century that Antisocial Personality disorder was named. Previously, these individuals were categorized as psychopaths due to the thrill-seeking and cunning nature of their actions. Psychopaths have the ability to change their personalities to ultimately get what they desire then revert back to a malicious, egocentric state. When faced with a dangerous adventure, for those with ASPD the choice will always be to peruse the danger. This is due to a constant underlying feeling of restlessness (Nolen-Hoeksema, 2011, p. 272). Although these traits can be deemed “psychopathic” this disorder is not only seen in those who have established themselves as violent criminals, but in those who have established as high-ranking members in society. How can this disorder differentiate itself so starkly within people? Although there are no direct medical test to diagnose this disorder,

Antisocial personality disorder (ASPD), opposition defiant disorder (ODD), and conduct disorder (CD) are three distinct disorders based upon their respective diagnostic criteria in the DSM-5. If ODD and CD were mild forms of ASPD, then there would need to be causal relationship between the childhood manifestations of ODD and CD and the adult manifestation of ASPD. There is evidence of comorbidity between ODD and CD, and also evidence to suggest that children diagnosed with these disorders may go on to develop ASPD later in life; however, correlation does not equal causation. The three disorders have subtle but important differences in their associated behaviors, underlying causes, treatment outcomes, and neurological signs.

“One of its primary roles is moderating social behavior,” he says. But it isn’t the single, deciding factor; he goes on to say, “There’s another part of the brain that researchers also see playing a role in violence. It turns out, some of the most cold-blooded murderers have prefrontal cortexes that function normally.”

Furthermore, psychopathy was considered during the twentieth century, the most widely used term to describe antisocial behavior (Reed, 1996). In the 1980s, the committee who devised the Diagnostic and Statistical Manual for the American Psychiatric Association recommended the term antisocial personality syndrome to be changed to antisocial personality disorder (Ellis & Walsh, 2000). Antisocial Personality Disorder Hare & McPherson (1984), were successful in pushing the idea that there is a significant correspondence between violent and persistent delinquent and criminal histories and antisocial personality disorder diagnosis. Acute persistent child conduct disorder behavior symptoms, also known as conduct disorder, have been directly linked to serious criminality and antisocial personality disorder (Ellis & Walsh, 2000). Although criminality and antisocial personality disorder ought not be equated, they should be seen as closely linked behavioral phenomena (Ellis & Walsh, 2000). Vitella (1996) believes that individuals with childhood conduct disorder have a higher than normal probability of being both criminal and diagnosed antisocial personality disorder in adolescence and adulthood, and persons with serious criminal records have a higher probability of being diagnosed psychopathic than those with little or no criminal history. Nevertheless, Ellis & Walsh (2000) in caution pointed out that these

Due to its primary role in processing memory and emotional reactions, over the last decade and a half psychologists have been linking the amygdala to psychopathy. It is involved in aversive conditioning and instrumental learning and is thus involved in all the processes that, when impaired, produce the same functional impairments displayed by psychopaths. Two famous studies conducted by Tiihonen and Kiehl respectively have confirmed this. Tiihonen used a volumetric MRI to test and confirm the positive correlation between low amygdaloid volume and a high degree of psychopathy in violent criminals (measured by the Hare checklist-revised) while Kiehl used a functional MRI to prove reduced amygdala response during an emotional memory task in individuals who scored high on the Hare checklist-revised. However, both these studies along with numerous others were conducted using violent offenders as subjects rather than individuals with psychopathy. Although many psychopaths do exhibit violent tendencies, not all violent offenders are necessarily psychopaths. A study conducted by Raine is one of the few that did focus only on individuals exhibiting psychopathy. In his study Raine was able to show reduced prefrontal grey matter in his test subjects. Unfortunately though, he was unable to differentiate between grey matter in different regions of the prefrontal cortex. It is however clear that there is one region of the frontal cortex that could be

Cognitive theory also explains the lack of remorse common in people with antisocial personality disorder by hypothesizing that those with the disorder genuinely cannot recognize a point of view other than their own. Based on the views of the biological perspective of psychology, antisocial personality disorder is a result of deficient functioning in the frontal lobe of the brain, explaining the lack of ability to plan ahead, strategize efficiently, experience sympathy, or

In order to understand why people act in antisocial ways, one needs to pinpoint which area of the brain controls social behavior. The prefrontal cortex has been thought to have something to do with control of social behavior ever since Phineas Gage's famous accident in 1848 (1). Phineas Gage was a

One researcher studied a theory relating to sociopaths and their antisocial behavior. This specific study proposed a theory that a primary sociopath is lacking in moral development and does not feel socially responsible for their actions. This type of sociopath is a product of the individual's personality, physiotype, and genotype, which supports the theory that a person’s genotype is the significant factor in the development of criminality. There is a secondary sociopath that develops in response to his or her environment because of how and where they were raised. Living in an urban residence, having a low socioeconomic status, or poor social skills can lead an individual to being unsuccessful in reaching their needs in a socially desirable way, which can turn into antisocial or criminal behavior. This supports the theory that the environment is the significant factor in the development of criminality. With these studies, it shows that both the genetic make-up of an individual as well as the environment play an important role with what kind of person they are going to be as an adult.

The issue of antisocial personality disorders has joined the study of criminology and psychology together to provide an accurate depiction of this disorder. Psychologists believe that individuals who suffer from antisocial personality disorders are more susceptible to commit criminal activity than the general population. Those who suffer from antisocial personality disorder or APD tend to lack self control, culpability, and generally show no signs of remorse for their actions no matter how heinous. “Individuals with antisocial personality disorder APD have reduced impulse control, lack of empathy and guilt, and show few signs of remorse (Wahlund, 2006 pg.1082). These individuals do suffer from a personality disorder however; they are still able to comprehend the mindset of others and generally are used to influence others to accomplish their own agenda.

Behavioral neuroscience or biological psychology employs the principles of brain pathology to the study of human behavior through genetic, physiological, and developmental operations, as well as, the brain’s capacity to change with experience. Since the second world war, crime was largely attributed to mostly economic, political, and social factors, along with what psychologists termed at the time, the “weak character” of mental disturbance, and brain biology was rarely considered. However, new advances in neuroscience and technology have allowed a number of studies that link brain development, impairment, and injury to criminal violence. This emerging field of psychology explores the brain at a microscopic level, focusing studies on the roles that the brain’s neurons, circuitry, neurotransmitters, and basic biological processes play in defining and molding all human behavior.