Table 1.
Measure means (M) and standard deviations (SDs) by sex and zygosity
| Measure | MZM | DZM | DZOM | MZF | DZF | DZOF | anovaP values | R2 | n | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M | SD | M | SD | M | SD | M | SD | M | SD | M | SD | Sex | Zygosity | Sex × Zygosity | |||
| Mathematics | 0.04 | 1.02 | 0.15 | 1.01 | 0.03 | 1.01 | −0.11 | 0.96 | −0.05 | 1.05 | 0.00 | 0.94 | 0.00** | 0.11 | 0.49 | 0.01 | 4922 |
| Reading | −0.06 | 1.06 | 0.04 | 1.04 | 0.04 | 1.02 | −0.06 | 0.96 | 0.02 | 1.00 | 0.05 | 0.93 | 0.92 | 0.00** | 0.90 | 0.00 | 5351 |
| g | 0.06 | 0.97 | 0.14 | 0.96 | 0.05 | 1.02 | −0.11 | 1.03 | −0.08 | 1.03 | 0.00 | 0.95 | 0.00** | 0.04* | 0.58 | 0.01 | 4684 |
DZF, DZ females; DZM, DZ males; DZOF, females in DZ opposite-sex pairs; DZOM, males in DZ opposite-sex pairs; MZF, MZ females; MZM, MZ males.
*
P values significant at the <0.05 level.
**
P values significant at the <0.01 level.