Table 2.
Genetic Correlations (r G) With Educationally Relevant Measures Estimated Using GWAS Summary Statistics and LDSC Regression in LD Hub
| Working memory | Processing speed | |||
|---|---|---|---|---|
| r G (SE) | p Value | r G (SE) | p Value | |
| Lifespan intelligence | 1.15 (0.22) | 1.36 × 10 −7 | 0.53 (0.27) | 0.050 |
| Childhood intelligence | 0.80 (0.16) | 2.50 × 10 −7 | 0.45 (0.36) | 0.211 |
| Years of schooling 2016 | 0.70 (0.15) | 4.20 × 10 −6 | 0.16 (0.16) | 0.293 |
| College completion | 0.65 (0.13) | 5.96 × 10– 7 | 0.19 (0.22) | 0.385 |
| Attention deficit hyperactivity disorder | −0.54 (0.12) | 1.1 × 10– 5 | −0.30 (0.15) | 0.042 |
Note. SNP, single nucleotide polymorphism. Bolded figures represent a significant (p ≤ .05) correlation. However, Bonferroni correction for multiple testing requires p < .001. The genetic correlations can exceed 1 as LD score regression is not a bounded estimator and so can produce correlations larger than 1 or smaller than −1.