Aeteologies of schizophrenia

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What is the physiological explanation of depression?
Brain chemistry and structure of the brain
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What do schizophrenics have?
High level of dopamine due to high number of D2 receptors
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What do these receptors cause?
Increase dopamine levels to increase messages from neurons that transmit dopamine fire too easily
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What does frequent firing lead to?
psychotic delusions and hallucinations
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What does research into cannibis allow?
binds to receptors and stimulates dopamine causing psychotic symptoms
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What would happen if no one smoked cannabis,
13% less people would develop the condition
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What is a second physiological explanation of S?
disorder is inherited through genes
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What genes?
DISC 1 and G72
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What does S do?
Runs in families and is more common in close relatives of a S than it is in families with no S
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What is the concordance rate of S?
1%
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What is it higher in?
Twins
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If S was entirely genetic what would the concordance rate be?
100% in mz
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What is it for MZ and DZ
40-50% and 17%
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What do studies show?
adopted children are more likely to develop dD if their biological mothers have had A compared to a control group of adoptees
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What is one strength of physiological explanation?
Kety
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What did he select?
66 adoptees, 33 had depression 33 did not
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14% of biological relatives had S also had S
less than 3% of their adopted relatives had S
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What does the pscyhological explanation reject?
nature
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What approach?
cognitive approach
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What does this explain?
faulty processing
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What about when one person hears voices?
turn for confirmation
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what about if they dont confirm it?
the person may start to believe others are hiding the truth, so they start to become delusional and hallucinated
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What do people with S do?
disorganised thinking such as word salad
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What is another reason?
product of dysfunctional family?
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What did Bateson suggest?
Children who later develop S are put in 'double bidns'
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What are children given?
Given conflicting messgaes by parents
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What sort of families do these children come from?
hostile and critical
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What does this lead to?
insecure sense of self
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What did Laing suggest?
sane response to an insane worlds
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What were half of s?
sexually abused
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Card 2

Front

What do schizophrenics have?

Back

High level of dopamine due to high number of D2 receptors

Card 3

Front

What do these receptors cause?

Back

Preview of the front of card 3

Card 4

Front

What does frequent firing lead to?

Back

Preview of the front of card 4

Card 5

Front

What does research into cannibis allow?

Back

Preview of the front of card 5
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