Table 1.
Descriptive Statistics and Correlations for Aggression, Theory-of-Mind, and Sibling Antagonism
| Variable | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|
| 1. Aggression (P) | - | |||||||
| 2. ToM (P) | .004 | - | ||||||
|
| ||||||||
| 3. Aggression (4) | .72** | .02 | - | |||||
| 4. ToM (4) | −.06 | .42** | −.05 | - | ||||
| 5. Sib Antagonism (4) | .28** | .07 | .27** | .03 | - | |||
|
| ||||||||
| 6. Aggression (12) | .67** | −.05 | .76** | −.10 | .27** | - | ||
| 7. ToM (12) | .05 | .53** | .06 | .49** | .10 | .04 | - | |
| 8. Sib Antagonism (12) | .34** | −.12 | .38** | −.15 | .36** | .54** | −.04 | - |
|
| ||||||||
| M | 8.63 | .93 | 9.01 | 1.31 | 1.64 | 8.75 | 2.46 | 2.40 |
| SD | 4.54 | .93 | 4.71 | .97 | .50 | 4.98 | 1.44 | .53 |
Note. P = prenatal; 4 = 4 months; 12 = 12 months timepoint
*
p < .05.
**
p < .01.