. Author manuscript; available in PMC: 2009 Mar 23.

Published in final edited form as: Intelligence. 2005 Sep 1;33(5):473–489. doi: 10.1016/j.intell.2005.05.002

Table 6.

Genetic, shared environmental, and non-shared environmental correlations for g, Reading, and Mathematics; and proportion of phenotypic correlation (r_P) between these variables mediated by A, C, and E (95% CIs in parentheses)

	g and Reading	G and Mathematics	Reading and Mathematics
Correlation
r_A	0.58 (0.46–0.72)	0.67 (0.53–0.83)	0.74 (0.68–0.80)
r_C	0.50 (0.23–0.76)	0.21 (–0.58–0.91)	0.74 (0.15–10.00)
r_E	0.14 (0.08–0.20)	0.11 (0.05–0.17)	0.39 (0.34–0.45)
Mediation of r_P
A (a_xa_yr_A/r_P)	0.65 (0.49–0.83)	0.83 (0.63–10.00)	0.76 (0.64–0.88)
C (c_xc_yr_C/r_P)	0.27 (0.11–0.43)	0.09 (30.11–0.27)	0.13 (0.01–0.25)
E (e_xe_yr_E/r_P)	0.08 (0.04–0.11)	0.08 (0.03–0.13)	0.11 (0.09–0.13)

r_A, r_C, r_E =genetic, shared environmental, non-shared environmental correlations.