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Twin Studies
Researchers focus on the study of
identical twins (MZ's) as they share
100% of their DNA, in order to
investigate the influence of genes and
see if there is a predisposition to
The findings from this are then
compared with twins who are less
genetically alike (DZ's),…

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In many cases, it is difficult to find a
large sample of identical twins that
possess the variable we are looking for
(e.g. schizophrenia) and is even harder
to fins those who are reared apart.
It also operates on the assumption that
both twins have identical environments
as this may…


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