Psychopathic individuals are best known for their flagrant disregard for
social and moral norms. Psychopaths have dysfunctional
personal relationships, characterized by violence,
exploitation, and
philandering. Emotionally, they are incapable of feeling
guilt or empathy, they respond abnormally to
fear and pain, and other emotions are shallow compared to population norms. Psychopaths refuse to adopt social and moral norms because they are not swayed by the emotions, such as guilt, remorse, or fear of retribution, that influence other human beings. Research has shown that the facial expressions of offenders on trial affect the jury's attitude and, in turn, the sentencing decision. While remorse may present guilt that may influence a jury's decision, a lack of remorse influences the jury even more because it is one trait of psychopathy. Psychopathy represents a configuration of traits that are missing within a person's personality, such as a lack of
empathy and remorse. Knowledge of psychopathic traits has been shown to affect how jurors perceive adult and juvenile offenders. Assessments of psychopathy are introduced to direct a relatively wide variety of questions in the legal system, so investigators have started examining the effects of psychopathy evidences. Through simulations in studies by John Edens, who is a
psychology professor at
Texas A&M University, data suggests that attributing psychopathic traits to adult and juvenile offenders can have a noticeable negative effect on how these individuals are viewed by others. One problem with the theory that the ability to turn empathy on and off constitutes psychopathy is that such a theory would classify socially sanctioned violence and
punishment as psychopathy, as these entail suspending empathy towards certain individuals and/or groups. The attempt to get around this by standardizing tests of psychopathy for cultures with different norms of punishment is criticized in this context for being based on the assumption that people can be classified in discrete cultures while cultural influences are in reality mixed and every person encounters a mosaic of influences. Psychopathy may be an artefact of psychiatry's standardization along imaginary sharp lines between cultures, as opposed to an actual difference in the brain. Work conducted by Professor
Jean Decety with large samples of incarcerated psychopaths offers additional insights. In one study, psychopaths were scanned while viewing video clips depicting people being intentionally hurt. They were also tested on their responses to seeing short videos of facial expressions of pain. The participants in the high-psychopathy group exhibited significantly less activation in the
ventromedial prefrontal cortex,
amygdala, and
periaqueductal gray parts of the brain, but more activity in the
striatum and the
insula when compared to control participants. In a second study, individuals with psychopathy exhibited a strong response in pain-affective brain regions when taking an imagine-self perspective, but failed to recruit the neural circuits that were activated in controls during an imagine-other perspective—in particular the ventromedial prefrontal cortex and amygdala—which may contribute to their lack of empathic concern. Researchers have investigated whether people who have high levels of psychopathy have sufficient levels of cognitive empathy but lack the ability to use affective empathy. People who score highly on psychopathy measures are less likely to exhibit affective empathy. There was a strong negative correlation, showing that psychopathy and lack of affective empathy correspond strongly. found those who scored highly on the psychopathy scale do not lack in recognising emotion in facial expressions. Therefore, such individuals do not lack in perspective-talking ability but do lack in compassion and concern towards the wellbeing of others. In fact, in an experiment published in March 2007 at the
University of Southern California neuroscientist
Antonio R. Damasio and his colleagues showed that subjects with damage to the
ventromedial prefrontal cortex lack the ability to empathically feel their way to moral answers, and that when confronted with moral dilemmas, these brain-damaged patients coldly came up with "end-justifies-the-means" answers, leading Damasio to conclude that the point was not that they reached immoral conclusions, but that when they were confronted by a difficult issue – in this case as whether to shoot down a passenger plane hijacked by terrorists before it hits a major city – these patients appear to reach decisions without the anguish that afflicts those with normally functioning brains. According to
Adrian Raine, a clinical neuroscientist also at the University of Southern California, one of this study's implications is that society may have to rethink how it judges immoral people: "Psychopaths often feel no empathy or remorse. Without that awareness, people relying exclusively on reasoning seem to find it harder to sort their way through moral thickets. Does that mean they should be held to different standards of accountability?" ==Forgiveness==