Table 1.

Variance components based on regression analysis with aggression as outcome and hyperactivity and inattention as predictors: variance components due to hyperactivity, inattention, the covariance of hyperactivity and inattention (unassigned to either hyperactivity or inattention) and a residual term

b = regression coefficient, s² = total phenotypic variance, s_G² = (broad-sense) genetic variance, s_T² = total environmental variance