gene responsible for the production of the enzyme monoamine oxidase which breaks down seretonin, dopamine and noradrenaline
MOAO-L gene
variant of the MOAO gene which is believed to lead two a deficiency in monoamine which in turn means the brain cannot metabolise the neurotransmitter properly
effects of the MOAO-L gene
too little seretonin - lack of inhibition over impulse
too much dopamine -
to high noradrenaline - overreaction to perceived threat causing aggression
Rhee and Waldman - adoptions studies
meta analysis
those with biologically aggressive parents had around a 41% concordance rate even when raised in different environments
aggression iOS highly genetic as environment is less likely to influence aggression
diathesis stress model - interactionist
an underlying vulnerability is often activated by a triggering event
Frazzetto
MOAO-L gene alone isn't enough to cause aggression and a traumatic event in a persons life is often required to trigger the aggressive tendencies
