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von Stumm, Sophie; Plomin, Robert – Developmental Science, 2018
School performance is one of the most stable and heritable psychological characteristics. Notwithstanding, monozygotic twins (MZ), who have identical genotypes, differ in school performance. These MZ differences result from non-shared environments that do not contribute to the similarity within twin pairs. Because to date few non-shared…
Descriptors: Genetics, Twins, Academic Achievement, Psychological Characteristics