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226051
Origins studies
Description
Bsc ED209 Mind Map on Origins studies, created by charliestar04 on 23/09/2013.
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Mind Map by
charliestar04
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Created by
charliestar04
over 10 years ago
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Resource summary
Origins studies
Family studies
diffs between relatives in their genetic similarities
family members share environments
difficult to seperate effects of genes from those of shared environment
Adoption studies
adopted children compared with biological & adoptive parents
similarity between bio parent used to assess contribution of genes
similarity between child & adoptive parent to assess contribution of environment
Twin studies
concordance for particular characteristics between MZ & DZ twins
MZ share 100% genes, MZ about 50%
if gene important MZ twins should show greater concordance than DZ
Reitveld et al- 75% heritability for over activity & attention problems
correlation analysis of concordance rates
Rates for schizophrenia 4x higher for MZ than DZ suggesting even complex mental disorders highly heritable
heritability is % of observed diffs within a particular population at a particular time which can be explained by genetic diffs
heritability refers to groups not individuals
does not say the extent to which a particular characteristic may be modifiable
it changes across lifespan, correlations for cog ability between parents & kids increase as child ages
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