Table III.
Child Behavior Checklist (Achenbach 1991) T-scores for Internalizing and Externalizing Problems by IQ group and sex; mean (SD) and % at riska
| Low IQ (56–84) |
Middle IQ (85–100) |
High IQ (101–130) |
pb | |
|---|---|---|---|---|
| (n=47; 25M, 22F) | (n=58; 24M, 34F) | (n=56; 33M, 23F) | ||
| Internalizing Problems | ||||
| Withdrawn | ||||
| Overall | 61.89 (8.67) | 60.52 (8.55) | 58.96 (8.24) | 0.0707 |
| 40% | 28% | 20% | ||
| Male | 60.84 (8.98) | 59.67 (9.11) | 59.70 (8.38) | 0.6924 |
| 40% | 29% | 24% | ||
| Female | 63.09 (8.35) | 61.12 (8.21) | 57.91 (8.09) | |
| 41% | 26% | 13% | ||
| Somatic Complaints | ||||
| Overall | 63.60 (9.58) | 64.69 (10.54) | 61.05 (10.69) | 0.5917 |
| 40% | 43% | 34% | ||
| Male | 62.16 (7.87) | 65.46 (10.23) | 60.21 (9.54) | 0.5380 |
| 36% | 50% | 36% | ||
| Female | 65.23 (11.19) | 64.15 (10.87) | 62.26 (12.27) | |
| 45% | 38% | 30% | ||
| Anxious/Depressed | ||||
| Overall | 60.43 (8.08) | 59.41 (9.58) | 59.05 (9.87) | 0.9915 |
| 23% | 22% | 23% | ||
| Male | 60.16 (8.07) | 58.67 (10.99) | 60.18 (10.53) | 0.8676 |
| 24% | 25% | 27% | ||
| Female | 60.73 (8.27) | 59.94 (8.58) | 57.43 (8.81) | |
| 23% | 21% | 17% | ||
| Externalizing Problems | ||||
| Delinquent Behavior | ||||
| Overall | 56.81 (7.17) | 56.55 (7.94) | 54.63 (5.92) | 0.0775 |
| 15% | 21% | 5% | ||
| Male | 55.72 (6.14) | 56.79 (9.03) | 54.70 (6.39) | 0.1696 |
| 8% | 29% | 6% | ||
| Female | 58.05 (8.15) | 56.38 (7.21) | 54.52 (5.31) | |
| 23% | 15% | 4% | ||
| Aggressive Behavior | ||||
| Overall | 59.45 (9.61) | 58.74 (9.50) | 56.41 (7.70) | 0.2435 |
| 26% | 21% | 13% | ||
| Male | 58.88 (8.35) | 58.71 (9.20) | 57.39 (8.48) | 0.4736 |
| 28% | 21% | 18% | ||
| Female | 60.09 (11.04) | 58.76 (9.84) | 55.00 (6.33) | |
| 23% | 21% | 4% | ||
a
For Syndrome scales, at risk is defined as a score of 67 or higher. In addition, normative means (SDs) for these scales are 54 and 6, respectively, and normative percentage at risk is approximately 1 to 2%.
b
p value is for Wald test from logistic model for IQ group overall or interaction of sex and IQ when reporting results by sex.