Table 3.
Twin correlations for Study 1 (CO Sample).
| MZ vs. DZ | |||||
|---|---|---|---|---|---|
| Num. of Partners | Age at F.S. | Depression | Neuroticism | Self-esteem | |
| MZ | 0.59 | 0.58 | 0.37 | 0.41 | 0.35 |
| DZ | 0.21 | 0.46 | 0.19 | 0.20 | 0.12 |
| MZFF vs. DZFF | |||||
| Num. of Partners | Age at F.S. | Depression | Neuroticism | Self-esteem | |
| MZFF | 0.61 | 0.64 | 0.41 | 0.45 | 0.30 |
| DZFF | 0.51 | 0.50 | 0.22 | 0.21 | 0.09 |
| MZMM vs. DZMM | |||||
| Num. of Partners | Age at F.S. | Depression | Neuroticism | Self-esteem | |
| MZMM | 0.57 | 0.51 | 0.29 | 0.31 | 0.44 |
| DZMM | 0.16 | 0.48 | 0.13 | 0.25 | 0.16 |
| DZOS | |||||
| Num. of Partners | Age at F.S. | Depression | Neuroticism | Self-esteem | |
| DZOS | 0.27 | 0.50 | 0.15 | 0.24 | 0.09 |
MZFF = MZ female twin pairs. DZFF = DZ female twin pairs. MZMM = MZ male twin pairs. DZMM = DZ male twin pairs, DZOS = DZ opposite-sex pairs. Age at F.S. = age at first sex.