Table 1.
Demographics for human sample
| Characteristic | XY | XXY | Statistics | XY | XYY | Statistics |
|---|---|---|---|---|---|---|
| Sample size | 82 | 99 | 37 | 34 | ||
| Age (years) | ||||||
| Mean | 16.41 | 16.38 | F(1,179) = 0.001, p = 0.973 | 14.74 | 15.49 | F(1,69) = 0.414, p = 0.522 |
| SD | 5.77 | 4.78 | 4.53 | 5.33 | ||
| Range | 6.03–24.99 | 6.67–25.8 | 5.6–24.7 | 7–25.9 | ||
| Full scale IQ | ||||||
| Mean | 114.9 | 93.25 | F(1,179) = 137, p < 2e-16** | 117.62 | 87.15 | F(1,69) = 137.6, p < 2e-16** |
| SD | 12.59 | 12.22 | 9.4 | 12.40a | ||
| Range | 83–146 | 64–127 | 97–136 | 62–111 | ||
| Socioeconomic status (SES) | ||||||
| Mean | 38.39 | 47.34 | F(1,179) = 9.543, p = 0.0023* | 38.89 | 54.91 | F(1,69) = 17.16, p = 9.57e-05** |
| SD | 17.87 | 20.6 | 14.47 | 18.04 | ||
| Range | 20–95 | 20–120 | 20–70 | 20–95 |
-
*p < 0.01 and **p < 0.001 for ANOVA test of significant difference between groups (XY vs XXY or XY vs XYY).
