Post 1The first area that must be addressed is the issue of what Psychotic behaviour entails. The term has in recent become over used and often interchanged with the word ‘psychotic’ a totally different mental disorder. Due to the examination of reasons that drive humans to become criminals and murders that also occurs in the topic at hand, it is important to differentiate between the too groups, so that it is realised they must be tackled separately and not bound together.
The dictionary states that ‘Psychopathy’ is “any disease of the mind; the psychological state of someone who has emotional or behavioural problems serious enough to require psychiatric intervention”. Any individual suffering from this, and therefore a Psychopath is therefore deemed to be “suffering chronic mental disorder characterised by anti-social behaviour and lack of guilt, and little capacity for forming emotional relationships with others.” Therefore, psychopath does not mean psychotic, nor does it instantly make one a criminal. To be psychopathic, rather, describes the lack of emotion responses to certainly stimuli seen in other humans.
(http://www.thefreedictionary.com/Psychopathy ;
http://www.health.qld.gov.au/mental_hlth/g...y_terms_nr.asp)As such the first issue that shall be looked at is genetics and there influence on crime both by psychopaths and non-psychopaths.
First, in relation to Psychopaths and crime;Studies such as those by Patrick et al. who monitored 101 male children as they grew from 15-24, noting that those who committed crimes "had a significantly lower resting heart rate, skin conductance activity, and more slow-frequency electroencephalographic activity” in line of psychopaths; regardless of “social, demographic, or academic factors.”
Patrick et al.'s research strongly supports an earlier prospective study by Adrian Raine and colleagues. In the late 1970s, Raine et al. measured the resting heart rate, skin conductance and EEGs of 101 15-year-old male school children in England. When the subjects reached the age of 24, in 1988, the researchers ran computer searches to locate all who had been found guilty of crimes. They discovered that the subjects who later committed crimes "had a significantly lower resting heart rate, skin conductance activity, and more slow-frequency electroencephalographic activity than non-criminals." These differences were not related to social, demographic, or academic factors.
(http://216.117.159.91/crimetimes/95a/w95ap9.htm)
Furthermore, the opposition’s own source from Shirley Lynn Scott, states that “according to one psychological surveying tool (DSM IIIR) between 3 - 5% of men are sociopaths; less than 1% of female population are sociopaths”. This firmly places the majority of psychopaths as male, men being between three to five times more likely to be psychopathic than females.
(http://www.crimelibrary.com/serial_killers/notorious/tick/psych_6.html?sect=19)
This does not support the argument of the opposition that psychopaths are the result of their environment. If these individuals truly were subject to social effects, then the results would average out to be the same, as females as well as males can suffer from bad environments. Particularly so in the issues of “rape” and domestic “physical… abuse” which the opposition state as leading to psychotic behaviour (their opening post), were females are more likely to be the victim than males.
Since the results are not equal it the opposition can only conclude the males are far more likely to suffer the harsh environments that lead to psychotic behaviour than females. Since this is obviously untrue, the only correct conclusion is that genetic differences between males and females are the reason. Either male genetics are more prone to psychopathic behaviours, or female genetics are more prone to resist such behaviours. An example may be that males are more prone do to evolving as hunters and warriors, while females are less prone having evolved to be nurturing carers and social animals.
As such psychopathic behaviour in criminals, appears regardless of social environment (contrary to the argument of the opposition), and is instead linked with heart rate, gender, skin conductance activity and electroencephalographic activity, issues related to genetics.
Second, in relation to criminals in general; Further biological causes of violent behaviour also relate to brain damage during an individuals’ fetus or postnatal forms. In the Journal of Biological Psychiatry, Adrian Raine and the University of California reveals that the brains of murderers, on average, have significantly lower rates of glucose uptake than the healthy brain of the control subjects.
Raine, noted "Poor functioning of these limbic area helps explain why violent offenders fail to learn from experience and are less able to regulate their emotions.”
(http://serendip.brynmawr.edu/bb/neuro/neuro98/202s98-paper1/Katz.html)
Studies by Caccaro in 1989 also linked damage to the amydgala, hypothalamus, and related areas of the limbic system, before and after birth, to aggression. Damage to these areas produced defensive methods, included increased aggression to stumuli that are not usually threatening or decrease in the responses that normally inhibit aggression.
This links brain damage to criminal violence such as murder.
Also, several studies of the of the central nervous system (CNS) suggest that low levels of the neurotransmitter serotonin have an effect on impulsive aggressive behaviour and irritability, and any crimes carried out as a result.
Violent, spur of the moment crimes, can be linked to the lack of impulsive control seen in individuals who have below-average levels of neurotransmitters such as norepinephrine or dopamine as a result of a increases in serotonin.
http://serendip.brynmawr.edu/bb/neuro/neur...aper1/Katz.htmlFurthermore, levels of aggression also change with levels of testosterone in both sexes, and violent criminals tend to have higher amounts that non-criminals. (Dabbs et al, 1995) One experiment found that pregnant woman given testosterone in an attempt to avoid miscarriage gave birth to children twice as likely in males and third more likely in females to be more aggressive than same-sex siblings who were not exposed. (Reinisch, Ziemba-Davis, & Sanders, 1991)
(http://www.digitaltermpapers.com/view.php/d/272.HTM)
Lastly, although not pre-determined before birth, it is neither an aspect of their social environment. A happy miscellaneous item, it fits closer to the genetics argument in arguing against social facts than it does the other way around.
A study published in the Clinical and Consulting Psychology on wife beating found that most men who beat there wives/partners were indeed subjected to violence childhoods, often by male-role models against women. However, the study also found that men who had suffered head-injuries were six times more likely to abuse their partner than men who had not.
It seems clear that natural chemicals in the brain increase violence, just as non-natural ones such as alcohol do. Therefore, unlike the opposition’s argument, there is evidence that environment may only be a trigger mechanism for those whose genetics have already rigged to not deal with issues, particularly stress, in the same matter as others.