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TWIN_STUDIES

                                            January 29, 2010

To quote wikipedia, as of 2010:

http://en.wikipedia.org/wiki/Heritability

  Twin studies entail problems of their own, such as:
  independently raised twins shared a common prenatal
  environment; they may have undergone intrauterine
  competition; the mother may be more physically
  stressed (less nutrients); and twins reared apart
  are difficult to find, and may reflect certain
  types of environments.


That refers to work such as this:

  J Health Soc Behav. 2003 Jun;44(2):111-29.

  "Rethinking twins and environments: possible social
  sources for assumed genetic influences in twin
  research."


              I have some speculations on the subject...

                      NATURE_OF_THE_WALLS


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