Fig. 3.
Children with higher polygenic scores acquired reading skills more rapidly. Association between age and reading skill (as measured by the Burt Word Reading Test; Scottish Council for Research in Education, 1976), separately for children with high polygenic scores (≥ 1 SD above the mean; n = 159) and those with low polygenic scores (≥ 1 SD below the mean; n = 147). The shaded areas show 95% confidence intervals.