Download Studies have shown that ______, in normal levels, exerts a calming

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Serotonin
High
Alcohol
Androgen
Generalised
Biological
We’ve seen how
chemicals
(neurotransmitters) are
used within our...
So if serotonin levels
are ___ behaviour can
be more impulsive and
aggressive.
Research on monkeys
show a diet high in
_________ (which
increases levels of
serotonin) exhibited
decreased levels of
aggression.
The sex difference in
aggression is usually
attributed to the
effects of the male sex
hormone, called...
Beeman (1947)
________ male mice
and found their
aggressiveness
reduced
Much of the research
has focused on males
and therefore is
criticised as...
The ______________
debate is important in
studying aggression.
Nervous System
Studies have shown
that _______, in
normal levels, exerts a
calming, inhibitory
effect on neural brain
activity.
Low
We have also found a
link between
aggressive behaviour
and _____levels of
dopamine.
Tryptophan
Badawy (2006) found
that ______
consumption caused
major disruption to
serotonin levels.
Testosterone
It is one of the
_________ hormones,
so called because they
produce male
characteristics.
Castrated
Animal studies have
investigated the role of
testosterone, but they
may not be _________
to human behaviour.
Androcentric Biased
Nature versus Nurture
______ explanations
reduce complex
human behaviour
down to small
chemical differences.
Monozygotic twins
(identical) share ___%
of their genes with
each other
100
Concordance
Aggression
Adoptive
Correlation
Similarly
Enzyme
Dizygotic (nonidentical) twins share
only ___% of their
genes.
Mason and Frick
(1994) conducted a
___ analysis of 12
twin and 3 adoption
studies, a total of 3795
twin pairs.
They assessed the
degree of genetic and
__________________
influences on
aggression in male
participants.
Hutchings and
Mednick (1973)
reviewed 14’000
adoptions in...
Finding large numbers
of MZ twins who are
reared apart is
extremely...
In some countries, such
as the US and New
Zealand, children given
up for adoption display a
higher rate of antisocial
behaviour.
Bruner et al (1993) found
men in a specific family to
have abnormally low levels
of MAOA in their bodies,
resulting in extremely
_____ levels of all three
neurotransmitters.
50
McGuffin and
Gotetesman (1985)
found a ________ rate
of 87% for aggressive
and antisocial behaviour
for MZ twins.
Meta-
Coccaro et al (1997)
conducted one of the
few twin studies
specifically looking
into...
Environmental
Adoption studies allow
us to examine the
difference between
children and their
biological parents, and
their ______ parents.
Denmark
Rare
New Zealand
High
They found a significant
positive __________ between
the number of convictions for
criminal violence among the
biological parents and of
convictions for criminal
violence among their adopted
sons.
Not only do MZ twins
share genetics they also
live in the same
environment, that
frequently treats them more
_______ than it treats DZ
twins.
Researchers have
discovered that the gene
responsible for producing
the ______ monoamine
oxidase A (MAOA) may
also be associated with
aggressive behaviour.
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