Tuon Independent jutun mukaan Stephenin kolmannella veljellä, Ericillä ei myöskään ollut rikosrekisteriä, että toi 'sukuvika' ei mielestäni oikein päde, vähän tuntuu että tämä tapaus jää faktojen puolesta osittain avonaiseksi.
Niin onhan sitä myös tutkittu, että geenit periytyy mm. psykopaattiset piirteet. Se ei kuintenkaan tarkoita sitä että ne tulisivat ikinä esille. Siihen vaikuttaa taas kasvuympäristö ja sen turvallisuus. Jos kaksi kolmesta veljestä on altistunut turvattomuudelle ja yksi on elänyt turvallisessa ympäristössä, niin silloinhan tämä olisi mahdollista.
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Psycopathic behaviour is inherited
Last updated at 10:02 25 May 2005
Little psychopaths are born anti-social, not corrupted by bad parenting, scientists have revealed.
A study of twins showed that anti-social behaviour was strongly inherited in children with psychopathic tendencies.
Other children without psychopathic traits did not appear to owe their anti-social habits to their genes.
In these children, being anti-social was chiefly the result of environmental factors.
The findings support previous research indicating that children with psychopathic tendencies often remain an anti-social problem and are difficult to reform.
Psychopaths are generally recognised by their lack of empathy - the ability to feel the emotions of others - and weak conscience.
If a psychopath does something that hurts another person he or she is less likely to feel remorse than other people.
These tendencies are a recognised warning sign of anti-social behaviour in young children.
To help identify the genetic components of anti-social behaviour, a team of British psychiatrists studied 3,687 pairs of seven-year-old twins.
Twins are often used by researchers investigating inherited traits. Identical twins share the same genes, and therefore the same inherited influences, whereas non-identical twins do not.
By comparing the two groups, it is possible to see if a particular trait is or is not carried in the genes.
In the new study, teacher ratings for anti-social behaviour and psychopathic tendencies were first obtained for the children.
Those in the top 10 per cent of the sample for anti-social behaviour were separated into two groups, with and without psychopathic tendencies.
Analysis showed that anti-social behaviour was only strongly inherited in the psychopathic children.
Chief investigator Dr Essi Viding, from the Medical Research Council's Social, Genetic and Developmental Psychiatry Centre at the Institute of Psychiatry, King's College, London, said:
"Our research has important implications.
The discovery that psychopathic tendencies are strongly heritable suggests that we need to get help for these youngsters early on.
"Any behaviour is influenced by multiple genes and an unlucky combination of genes may increase vulnerability to a disorder.
"However, strong heritability does not mean that nothing can be done. Children are open to protective environmental influences early in life and these influences can buffer the effect of genetic vulnerability.
"By combining cognitive neuroscience and molecular genetic research, we are hoping to uncover how genetic vulnerability might influence early brain development. This can in turn help us to develop methods of prevention and intervention to suit each particular child.
"It means that we might be able to treat anti-social behaviour with psychopathic tendencies as successfully as other emotional disorders."
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Lähde:
http://www.dailymail.co.uk/health/article-349932/Psycopathic-behaviour-inherited.html
