Aggression - SS2 - Biological Explanations - Research

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Which 2 psychologists support the biochemical model?
Ferrari et al & Mann et al
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What did Ferrari et (2003) allow rats to do for 10 days?
Fight
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What happened on the 11th day and what was found?
Refrained from fighting and dopamine levels increased & serotonin decreased
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Which drug did Mann et al (1990) give to 35 adults?
Dexfenfluramine - depletes serotonin in the brain
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In males, what had increased after taking the drug?
Hostility and aggression
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Which 4 psychologists supported the role of hormonal mechanisms in aggression?
Archer, Book, Virkkunen and Tennes & Kreye
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How many studies did Archer (1991) do a meta-analysis of?
5
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What did he find a low positive correlation between?
Testosterone & aggression
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How many studies did Book (2001) do a meta-analysis of?
45
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What correlation was found between testosterone & aggression?
Positive correlation of 0.14
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What did Virkkunen (1985) find in habitually violent offenders?
Low levels of cortisol
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What did Tennes & Kreye (1985) find in aggressive school children?
Low levels of cortisol
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Which 3 psychologists support the role of genetics in aggression?
Cases et al, Hutchings & Mednick and Brunner et al
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What did Cases et al (1995) study?
Mice genetically engineered to lack MAOA
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What was their behaviour like?
Severe behavioural alterations & when adults they showed enhanced aggression and were aggressive when mating
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How many adoptions did Hutchings & Mednick study?
14,000
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What was a positive correlation found between?
Boys and biological parents with criminal convictions
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Who did Brunner et al (1993) study?
Large Dutch family
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What did all males in the family have?
Mutant form of MAOA gene
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What was their behaviour like?
All had borderline retardation and reacted aggressively when angry, fearful or frustrated
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Card 2

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What did Ferrari et (2003) allow rats to do for 10 days?

Back

Fight

Card 3

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What happened on the 11th day and what was found?

Back

Preview of the front of card 3

Card 4

Front

Which drug did Mann et al (1990) give to 35 adults?

Back

Preview of the front of card 4

Card 5

Front

In males, what had increased after taking the drug?

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Preview of the front of card 5
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