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100974
Biological
Description
Psychology (Schizophrenia) Mind Map on Biological, created by lucysavage176 on 21/05/2013.
No tags specified
psychology
schizophrenia
psychology
schizophrenia
Mind Map by
lucysavage176
, updated more than 1 year ago
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Created by
lucysavage176
almost 11 years ago
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Resource summary
Biological
Family studies
1st degree relatives
share 50%
18x more at risk
Kendler
inconclusive
retrospective
support
Kety
mothers with + without scizo
matched pairs
group 1- diagnosed 16.2%
gruop 2- 1.9%
evaluation
not rely on retrospective data
memory
genes vs environment
reliablility of diagnosis
others diagnosed on old system
Twin studies
MZ 40%
DZ 5.3%
maudsly twin register
share womb
Adoption studies
Finnish
Tienari
112 schizo mothers
7% developed schizo
153 control
1.5%
separated before age 4
poor communication in adopted families increaded risk
Biochemical
dopamine
limbic system
excess dopamine
super-sensitivity
scizo was induced in rats using amphetamines
evaluation
post mortems
increase dopamine/receptor density
not just scizo
not only factor
PET scans
causal?
drugs
aleviate posative not negative symptoms
most effective drugs affect serotonin
Diathesis stress
predisposition
trigger
genetics cannot give full explaination
89% have no known relative with schizo
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