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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Acta Psychiatr Scand. 2011 Nov 24;125(3):203–212. doi: 10.1111/j.1600-0447.2011.01799.x

Table 6.

Parameter estimates for the various bivariate models for education and anxiety

Model Education
Anxiety
Correlations between factors
a2 c2 e2 a2 c2 e2 rA rC rE
1. ACE, CSL (M) .64 .14 .22 .38 .03 .59 .36 .53 .16
(F) .53 .24 .24 .16 .31 .53 .36 .53 .16
2. ACE .58 .19 .23 .38 .07 .55 .38 .59 .14
3. ACeduE .59 .18 .23 .46 - .54 .48 - .12

Note:

Models: CSL= common sex-limitation, A=additive genetic effect, C=environmental effect shared by co-twins, E=environmental effect not shared by co-twins, CEDU= environmental effect for education only, shared by co-twins.

a2=proportion additive genetic variance, c2=proportion environmental variance shared by co-twins, e2=proportion environmental variance not shared by co-twins.