Proportions of the phenotypic correlations between ADHD symptoms and Raven’s Standard Progressive Matrice scores due to genetic (A), shared environmental (C) and non-shared environmental (E) influences.

ADHD = attention deficit hyperactivity disorder; rph = phenotypic correlationaProportions of the phenotypic correlation due to total genetic or environmental influences (i.e. transmitted plus age-specific effects).bProportions of the phenotypic correlation due to time-specific genetic or environmental influences specific to early adolescence.Figures in parentheses refer to the absolute contributions of A, C and E respectively to the phenotypic correlations between ADHD symptoms and Raven’s scores.Proportions of the phenotypic correlations between ADHD symptoms and Raven’s Standard Progressive Matrice scores due to genetic (A), shared environmental (C) and non-shared environmental (E) influences.