Adoption studies can only find an influence of the environment to the extent that the adoptive environments for two siblings differ.
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Replying to @sarahdoingthing
@sarahdoingthing depends entirely on what are considered normal ranges.1 reply 0 retweets 0 likes
@emareaf this issue is not present in twin studies (which agree w/ adoption studies), do parents treat monozygotic twins more similarly? meh
3:41 AM - 18 Sep 2014
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