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Genetic explanations for schizophrenia essay
Genetic explanations for schizophrenia essay
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Analysis of the Biological Method
The first one is infection. This explanation says that an infection
can cause mental illness. This can be explained by a study through
which it was proven, that babies who’s mother had the flu when they
were pregnant, had a much greater risk of developing schizophrenia
when they grew up. In other words, contracting illness or disease
could mean that you have a greater chance of developing symptoms of
abnormality. Meaning perhaps that illness or disease could affect the
chemical make up of the brain and therefore could cause abnormality in
some way. There is another example of a study in the nineteenth
century. Syphilis was found to lead to brain deterioration which then
led to psychotic behaviours such as delusions and other things.
Then there is another explanation, involving genetics. It says that
people inherit genes through reproduction and that these genes cause
abnormality. So for instance, a grandparent could have had
schizophrenia and it could have passed through one generation without
resurfacing but then could come through and resurfaced in their
grandchildren. There have been plenty of studies into identical twins
compared with fraternal twins to try and justify this assumption. Most
of these studies have shown a distinct positive correlation when each
identical twin is studied to see whether they at some point become
mentally ill. Most studies show that if one identical twin becomes
mentally ill, the other has a very high chance of doing the same.
Whereas with fraternal twins this is not so much the case. An
Identical twin is around five times more likely to become ill if the
other twin does than if they were fraternal twins. Related to this
also, is adoption studies. It is another study to try and prove this
theory. Adoption studies show that if an adopted child contracts a
mental illness then the biological parents are far more likely to have
an illness to, rather than the adoptive parents.
The next biological model theory is biochemical.