Table 2.
Model fitting results in the three twin samples
| ACE model |
AE model |
CE model |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Sample | −2LL | df | AIC | −2LL | df | AIC | −2LL | df | AIC |
| Virginia | 23 162.40 | 13 995 | −4827.60 | 23 163.27 | 13 999 | −4834.73 | 23 178.88 | 13 999 | −4819.12 |
| Australia # 1 | 14 148.09 | 10 771 | −7393.91 | 14 149.56 | 10 775 | −7400.44 | 14 182.22 | 10 775 | −7367.78 |
| Australia # 2 | 8363.10 | 5611 | −2858.90 | 8363.34 | 5615 | −2866.66 | 8383.91 | 5615 | −2846.09 |
LL, log likelihood; df, degrees of freedom; AIC, Akaike’s information criterion (Akaike, 1987) – where lower scores indicate an improved balance of explanatory power and parsimony.