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Between-group performance on matched sibling pairs
| Measure | 20 boys with MD range, mean, SD | 20 siblings range, Mean, SD | Paired-t df (1,19) | p-value |
|---|---|---|---|---|
| Objects | 6–16, 12.35, 2.50 | 9–16, 12.90, 2.10 | 1.15 | Ns |
| Faces | 9–15, 13.25, 1.58 | 8–15, 13.55, 1.93 | 0.52 | Ns |
| Affects | 5–15, 10.95, 2.74 | 9–16, 13.15, 1.93 | 2.59 | 0.02 |
| Situations | 9–16, 12.94, 2.23 | 9–16, 14.05, 1.30 | 1.72 | Ns |
