Table 5.
Relative contributions of additive genetic and non-shared environmental influences on the trait variance (diagonal) and covariance cross-trait (off-diagonal) for HD (HRS-SR), OCS (PI-R-ABBR), and tics (YGTSS).
| Phenotypic correlation |
CTCT (MZ below, DZ above diagonal) |
Additive genetic effects (A) |
Non-shared environmental effects (E) |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| HD | OCS | HD | OCS | Tics | HD | OCS | Tics | HD | OCS | Tics | |
| HD | – | – | 0.07 | 0.05 | 0.326 | – | – | 0.674 | – | – | |
| OCS | 0.3 | – | 0.14 | – | 0.02 | 0.504 | 0.375 | – | 0.496 | 0.625 | – |
| Tics | 0.15 | 0.25 | 0.12 | 0.16 | – | 0.701 | 0.611 | 0.367 | 0.299 | 0.389 | 0.633 |
CTCT, cross-twin-cross-trait correlations.