Table A6.
Dunedin Sample: Descriptive Statistics for Disruptive Behavior Scales
| Aggression |
Opposition |
Hyperactivity |
Conduct problems |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age (in years) | M | SD | α | M | SD | α | M | SD | α | M | SD | α |
| Boys | ||||||||||||
| 7 | .21 | .42 | .76 | .21 | .42 | .71 | .40 | .57 | .85 | .05 | .14 | .45 |
| 9 | .24 | .48 | .84 | .27 | .47 | .79 | .39 | .54 | .83 | .07 | .19 | .53 |
| 11 | .21 | .43 | .77 | .25 | .45 | .74 | .37 | .56 | .86 | .07 | .21 | .69 |
| 13 | .19 | .44 | .85 | .22 | .44 | .77 | .29 | .48 | .79 | .08 | .23 | .65 |
| Girls | ||||||||||||
| 7 | .14 | .35 | .77 | .11 | .30 | .65 | .20 | .44 | .82 | .05 | .16 | .55 |
| 9 | .10 | .29 | .66 | .11 | .31 | .74 | .16 | .40 | .83 | .03 | .12 | .49 |
| 11 | .10 | .27 | .69 | .10 | .29 | .68 | .13 | .33 | .78 | .03 | .12 | .41 |
| 13 | .07 | .23 | .55 | .12 | .31 | .67 | .13 | .35 | .83 | .03 | .13 | .50 |
Note. Mean disruptive behavior scores range from 0 to 2.