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The equal environments assumption of classical twin studies may not hold (2005)
Journal Article
Richardson, K., & Norgate, S. (2005). The equal environments assumption of classical twin studies may not hold. British Journal of Educational Psychology, 75(3), 339-350. https://doi.org/10.1348/000709904X24690

The classical twin method – comprising comparisons of monozygotic (MZ) and dizygotic (DZ) twins – in the domain of cognitive abilities and attainments has led to wide acceptance of results suggesting a large amount of additive genetic variance, with... Read More about The equal environments assumption of classical twin studies may not hold.

The equal environments assumption of classical twin studies may not hold (2005)
Journal Article
Richardson, K., & Norgate, S. (2005). The equal environments assumption of classical twin studies may not hold. British Journal of Educational Psychology, 75(3), 339-350. https://doi.org/10.1348/000709904X24690

The classical twin method – comprising comparisons of monozygotic (MZ) and dizygotic (DZ) twins – in the domain of cognitive abilities and attainments has led to wide acceptance of results suggesting a large amount of additive genetic variance, with... Read More about The equal environments assumption of classical twin studies may not hold.