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.