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Intraclass correlations for MZ and DZ twins.
| Measure | r MZ (N) (95%CI) | r DZ (N) (95%CI) |
|---|---|---|
| Number Sense accuracy | .35 (730) | .18 (1175) |
| (.28–.41) | (.13–.24) | |
| Weber Fraction | .31 (700) | .15 (1140) |
| (.24–.38) | (.09–.20) |
rMZ = intraclass correlation for monozygotic twins; rDZ = intraclass correlation for dizygotic twins; N = number of complete pairs; 95% CI = 95% confidence intervals.
