Table 2.
Biases in the genetic and environmental variance components as a function of G × E interaction between the genetic and unique environmental variance components
| Simulated interaction pathway |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 |
1/2 |
1 |
1 1/2 |
2 |
|||||||
| Estimates | (Std. Dev) | Estimates | (Std. Dev) | Estimates | (Std. Dev) | Estimates | (Std. Dev) | Estimates | (Std. Dev) | ||
| Genetic variance component | 0.0 | 0.00 | (0.00) | 0.02 | (0.04) | 0.04 | (0.05) | 0.04 | (0.06) | 0.04 | (0.06) |
| 0.1 | 0.00 | (0.00) | −0.02 | (0.06) | −0.03 | (0.07) | −0.04 | (0.07) | −0.05 | (0.06) | |
| 0.2 | 0.00 | (0.00) | −0.04 | (0.06) | −0.09 | (0.08) | −0.12 | (0.07) | −0.14 | (0.06) | |
| 0.3 | 0.00 | (0.00) | −0.06 | (0.06) | −0.15 | (0.09) | −0.2 | (0.08) | −0.23 | (0.06) | |
| 0.4 | 0.00 | (0.00) | −0.08 | (0.06) | −0.2 | (0.09) | −0.28 | (0.08) | −0.32 | (0.06) | |
| 0.5 | 0.00 | (0.00) | −0.11 | (0.06) | −0.26 | (0.08) | −0.36 | (0.08) | −0.41 | (0.06) | |
| 0.6 | 0.00 | (0.00) | −0.13 | (0.05) | −0.32 | (0.08) | −0.44 | (0.08) | −0.5 | (0.06) | |
| 0.7 | 0.00 | (0.00) | −0.15 | (0.05) | −0.37 | (0.07) | −0.51 | (0.07) | −0.59 | (0.06) | |
| 0.8 | 0.00 | (0.00) | −0.18 | (0.04) | −0.43 | (0.06) | −0.59 | (0.07) | −0.67 | (0.06) | |
| Common environment variance component | 0.0 | 0.00 | (0.00) | 0.02 | (0.03) | 0.03 | (0.04) | 0.03 | (0.04) | 0.03 | (0.04) |
| 0.1 | 0.00 | (0.00) | −0.02 | (0.05) | −0.04 | (0.06) | −0.05 | (0.05) | −0.06 | (0.04) | |
| 0.2 | 0.00 | (0.00) | −0.04 | (0.05) | −0.1 | (0.06) | −0.13 | (0.06) | −0.15 | (0.04) | |
| 0.3 | 0.00 | (0.00) | −0.06 | (0.05) | −0.15 | (0.07) | −0.21 | (0.06) | −0.24 | (0.05) | |
| 0.4 | 0.00 | (0.00) | −0.08 | (0.05) | −0.2 | (0.06) | −0.29 | (0.06) | −0.33 | (0.05) | |
| 0.5 | 0.00 | (0.00) | −0.1 | (0.04) | −0.26 | (0.06) | −0.36 | (0.06) | −0.42 | (0.05) | |
| 0.6 | 0.00 | (0.00) | −0.13 | (0.04) | −0.31 | (0.05) | −0.44 | (0.05) | −0.5 | (0.05) | |
| 0.7 | 0.00 | (0.00) | −0.15 | (0.04) | −0.37 | (0.05) | −0.51 | (0.05) | −0.59 | (0.05) | |
| 0.8 | 0.00 | (0.00) | −0.18 | (0.03) | −0.43 | (0.04) | −0.58 | (0.05) | −0.67 | (0.05) | |
| Unique environment variance component | 0.2 | 0.00 | (0.00) | 0.16 | (0.02) | 0.4 | (0.03) | 0.55 | (0.04) | 0.64 | (0.04) |
| 0.3 | 0.00 | (0.00) | 0.14 | (0.02) | 0.35 | (0.03) | 0.48 | (0.04) | 0.56 | (0.04) | |
| 0.4 | 0.00 | (0.00) | 0.12 | (0.02) | 0.3 | (0.03) | 0.41 | (0.04) | 0.48 | (0.04) | |
| 0.5 | 0.00 | (0.00) | 0.10 | (0.02) | 0.25 | (0.03) | 0.34 | (0.04) | 0.40 | (0.04) | |