Table 2.
Means and standard deviations for CBCL aggression T scores for the entire sample and for different demographic categories at each assessment time
| CBCL Aggression |
||||
|---|---|---|---|---|
| T1 |
T2 |
T3 |
T4 |
|
| Demographic Variable | M (SD) | M (SD) | M (SD) | M (SD) |
| Entire sample | 55.7 (7.2) | 55.3 (7.0) | 55.06 (7.2) | 54.8 (6.9) |
| 1. Child gender | ||||
| Girl | 55.8 (7.5) | 55.7 (7.2) | 55.2 (7.1) | 55.6 (7.3) |
| Boy | 55.5 (6.9) | 55.0 (6.9) | 54.9 (7.3) | 54.1 (6.4) |
| 2. Child race | ||||
| African American | 56.3 (8.0) | 55.5 (7.2) | 55.2 (7.7) | 54.3 (6.2) |
| Hispanic | 55.9 (7.3) | 56.0 (7.6) | 56.5 (8.1) | 56.1 (7.4) |
| White | 54.7 (5.9) | 54.6 (6.4) | 53.9 (5.8) | 54.4 (7.1) |
| 3. Mother education | ||||
| Less than high school | 56.2 (8.1) | 55.6 (7.3) | 55.9 (8.2) | 55.3 (7.5) |
| High school | 55.8 (7.0) | 55.7 (7.5) | 54.7 (6.2) | 54.7 (5.7) |
| Some college | 54.8 (6.1) | 54.4 (6.3) | 55.1 (7.4) | 54.7 (7.0) |
| BS/BA | 57.1 (9.2) | 56.0 (7.9) | 55.3 (8.4) | 55.7 (9.6) |
| More than BS/BA | 54.5 (5.2) | 54.7 (5.0) | 53.0 (5.9) | 52.5 (3.6) |
| 4. Mother marital status | ||||
| Married, live together | 54.8 (6.3) | 54.5 (6.2) | 54.0 (6.2) | 54.1 (6.5) |
| Never married | 56.6 (7.9) | 55.6 (7.6) | 55.9 (8.4) | 55.9 (7.9) |
| Other | 56.3 (7.8) | 56.4 (7.7) | 56.1 (7.7) | 55.0 (6.7) |
Note: CBCL, Child Behavior Checklist (Achenbach, 1991); T1–T4, Time 1, Time 2, Time 3, Time 4, respectively. There were 440 valid cases at T1 assessment, 391 at T2, 357 at T3, and 333 at T4. CBCL aggression scores are age- and gender-adjusted T scores.