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Estimated twin-sibling correlations for optimism scores with 95 % confidence intervals
| Zygosity | Optimism 6 items |
Optimism 3 items |
Pessimism 3 items |
|---|---|---|---|
| MZM | .32 (.22, .41) | .25 (.15, .35) | .29 (.19, .38) |
| DZM/MM | .13 (.05, .21) | .06 (−.02, .13) | .13 (.05, .21) |
| MZF | .42 (.34, .48) | .31 (.23, .39) | .38 (.31, .45) |
| DZF/FF | .22 (.15, .28) | .21 (.14, .27) | .17 (.10, .23) |
| DOSmf/MF | .19 (.14, .24) | .15 (.09, .20) | .17 (.12, .23) |
