Table 4.
Extreme Groups Approach: Regression Models Predicting Change in Externalizing from Age 2 to 5 in Study 1
| ΔR2 | ΔF | b | t | |
|---|---|---|---|---|
| Group: Decreasing Externalizing (1/2 SD < mean; n = 34) | ||||
| | ||||
| Step 1. | 0.47 | 27.85*** | ||
| Age 2 Externalizing | -1.64 | 5.28*** | ||
| Step 2. | 0.04 | 1.33 | ||
| Allostatic Load | -0.04 | 0.56 | ||
| Environmental Load | 0.08 | 1.63 | ||
| Step 3. | 0.03 | 1.53 | ||
| Allostatic × Environmental | -0.06 | 1.24 | ||
| | ||||
| Group: Stable Externalizing (n = 49) | ||||
| | ||||
| Step 1. | 0.00 | 0.02 | ||
| Age 2 Externalizing | 0.03 | 0.12 | ||
| Step 2. | 0.06 | 1.31 | ||
| Allostatic Load | -0.06 | 1.51 | ||
| Environmental Load | 0.01 | 0.40 | ||
| Step 3. | 0.00 | 0.17 | ||
| Allostatic × Environmental | 0.01 | 0.41 | ||
| | ||||
| Group: Increasing Externalizing (1/2 SD > mean; n = 29) | ||||
| | ||||
| Step 1. | 0.13 | 3.94+ | ||
| Age 2 Externalizing | 2.00 | 1.99+ | ||
| Step 2. | 0.36 | 8.62** | ||
| Allostatic Load | -0.01 | 0.10 | ||
| Environmental Load | -0.40 | 4.15*** | ||
| Step 3. | 0.01 | 0.65 | ||
| Allostatic × Environmental | -0.06 | 0.81 | ||
Note. Interaction terms are product of centered allostatic and environmental load indices.
***
p < .001
**
p < .01
*p < .05
+
p < .10