Table 3.
Mean Levels of Aggression, Rule-breaking, and Negative Parenting Separately by Child Sex
| Males | Females | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Min | Max | N | Mean | SD | Min | Max | N | |
| Aggression | ||||||||||
| CBCL-Mother report | 5.16** | 5.37 | 0 | 31 | 855 | 4.01 | 4.54 | 0 | 28 | 783 |
| CBCL- Father report | 5.01** | 4.52 | 0 | 25 | 709 | 4.14 | 4.45 | 0 | 25 | 659 |
| STAB-Mother report | 19.59** | 6.18 | 10 | 47 | 842 | 17.26 | 5.27 | 10 | 35 | 775 |
| STAB-Father report | 18.79** | 5.35 | 10 | 46 | 697 | 16.79 | 4.85 | 10 | 37 | 653 |
| Rule-breaking | ||||||||||
| CBCL-Mother report | 1.89** | 2.23 | 0 | 14 | 855 | 1.20 | 1.62 | 0 | 14 | 783 |
| CBCL- Father report | 1.78** | 1.99 | 0 | 17 | 709 | 1.27 | 1.53 | 0 | 8 | 659 |
| STAB-Mother report | 11.26** | 0.88 | 11 | 20 | 842 | 11.11 | 0.56 | 11 | 21 | 775 |
| STAB-Father report | 11.25* | 1.78 | 11 | 25 | 697 | 11.08 | 0.35 | 11 | 15 | 653 |
| Negative Parenting | ||||||||||
| Observed Negative | ||||||||||
| Content | 1.67 | 0.78 | 1 | 6 | 831 | 1.60 | 0.72 | 1 | 4 | 751 |
| Observed Negative Affect | 1.35* | 0.66 | 1 | 6 | 831 | 1.28 | 0.56 | 1 | 4 | 754 |
| Conflict- Mother report | 21.21** | 6.08 | 12 | 42 | 847 | 20.31 | 5.76 | 12 | 41 | 776 |
| Conflict- Twin report | 21.33** | 6.21 | 12 | 46 | 837 | 19.71 | 5.64 | 12 | 45 | 784 |
Note. CBCL = Child Behavior Checklist. STAB = Sub-types of Antisocial Behavior.
*
Mean are significantly different between males and females, p <.05.
**
p < .01.