Table 2.
Within twin pair intra-class correlation coefficients of outcome measures
| Monozygotic n = 256 |
Dizygotic n = 426 |
All n = 682 |
||||
|---|---|---|---|---|---|---|
| ICC | p | ICC | p | ICC | p | |
| Change in implicit self-esteema | .138 | .133 | .118 | .095 | .126 | .025 |
| Change in positive affectb | .094 | .296 | .126 | .077 | .111 | .046 |
| Change in negative affectb | .113 | .222 | .026 | .714 | .058 | .306 |
ICCs of monozygotic and dizygotic twins did not differ significantly from each other
n indicates the number of individual twins, Missing values on change scores an = 63; bn = 52