Genetic Factors in Aggression

  • Created by: 13paskell
  • Created on: 07-04-18 16:49
What concordance rate did Coccaro et al. find between MZ and DZ twins regarding physical assault?
50% for MZ and 19% for DZ
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What concordance rate did Coccaro et al find between MZ and DZ twins regarding verbal aggression?
28% for MZ and 7% for DZ
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Who carried out a meta-analysis of adoption studies for direct aggression and antisocial behaviour?
Rhee and Waldman
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What did Rhee and Waldman find?
They found that genetic influences accounted for 41% of the variance in aggression
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What gene 'mops up' neurotransmitters in the brain after a nerve impulse has been transmitted from one neutron to another?
MAOA gene
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What is catabolism?
Where the MAOA gene breaks down serotonin into constituent chemicals to be recycled.
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Give an example of a variant of the MAOA gene
Warrior gene
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What does the warrior gene lead to?
The warrior gene leads to low levels of MAOA activity, which is associated with aggressive behaviour.
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What psychologist studied a Dutch Family who were repeatedly involved in impulsive behaviours?
Han Brunner et al.
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How many people were studied in this Dutch Family?
28
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What did Brunner et al. find?
The family had abnormally low levels of MAOA enzyme in the brains and the low-activity version of the MAOA gene.
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Gregory Stuart et al. studied 97 men who committed Inmate Partner Violence (IPV). What programme were these men part of?
Batterer Treatment Programme
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Men with low activity MAOA gene were found to be the most violent. True or false?
True
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What does 'GxE' stand for?
Gene-environment interactions
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What is an example of GxE?
Frazzetto et al.
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Why is 'first 15 years of life' important in remembering Frazzetto's study?
This is what he believed to trigger aggression. Not everyone with low activity MAOA is aggressive.
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What was significant with Rose McDermott's et al. finding?
She showed how participants with low MAOA gene only behaved aggressively when provoked, otherwise they were no less aggressive than other participants.
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Who found there to be no evidence of an association between any single gene and aggression in his/her met-analsysi study?
Evangelos Vasos et al. (2014)
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What concordance rate did Coccaro et al find between MZ and DZ twins regarding verbal aggression?

Back

28% for MZ and 7% for DZ

Card 3

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Who carried out a meta-analysis of adoption studies for direct aggression and antisocial behaviour?

Back

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Card 4

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What did Rhee and Waldman find?

Back

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Card 5

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What gene 'mops up' neurotransmitters in the brain after a nerve impulse has been transmitted from one neutron to another?

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