Table A3.
Quebec 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 | ||||||||||||
| 6 | .28 | .45 | .82 | .37 | .46 | .84 | .60 | .70 | .88 | N/A | N/A | N/A |
| 7 | .30 | .52 | .88 | .34 | .45 | .83 | .53 | .70 | .89 | N/A | N/A | N/A |
| 8 | .26 | .45 | .83 | .32 | .40 | .79 | .45 | .64 | .86 | .14 | .25 | .39 |
| 9 | .31 | .47 | .83 | .40 | .45 | .79 | .44 | .63 | .89 | .15 | .27 | .52 |
| 10 | .24 | .43 | .83 | .36 | .44 | .81 | .42 | .62 | .87 | .14 | .24 | .36 |
| 11 | .22 | .40 | .81 | .32 | .41 | .80 | .37 | .58 | .87 | .13 | .23 | .31 |
| 12 | .22 | .39 | .81 | .32 | .40 | .79 | .34 | .58 | .86 | .11 | .22 | .33 |
| Girls | ||||||||||||
| 6 | .08 | .25 | .80 | .19 | .32 | .78 | .30 | .54 | .89 | N/A | N/A | N/A |
| 7 | .08 | .26 | .87 | .20 | .33 | .79 | .28 | .53 | .86 | N/A | N/A | N/A |
| 8 | .07 | .24 | .80 | .19 | .33 | .79 | .22 | .48 | .86 | .09 | .21 | .48 |
| 9 | .06 | .22 | .78 | .19 | .32 | .78 | .21 | .43 | .85 | .08 | .19 | .32 |
| 10 | .05 | .17 | .67 | .16 | .30 | .78 | .16 | .39 | .82 | .08 | .19 | .32 |
| 11 | .04 | .18 | .79 | .15 | .28 | .74 | .12 | .34 | .75 | .06 | .17 | .33 |
| 12 | .04 | .19 | .76 | .16 | .29 | .75 | .11 | .31 | .74 | .06 | .17 | .38 |
Note. Mean disruptive behavior scores range from 0 to 2.