Table 6.
Summary of Linear Regression Models of BAS Total, BAS Subscales, BIS, Impulsive Nonconformity and the Interaction of BAS, BAS Subscales, and BIS with Impulsive Nonconformity Predicting MAST-DAST Average over the 1-year Follow-up, Controlling for Lifetime History of Substance Use.
| β | T | β | t | β | t | β | t | β | t | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | ||||||||||
| Step 1 | Step 1 | Step 1 | Step 1 | Step 1 | ||||||||||
| Lifetime SUD | .201** | 2.927 | Lifetime SUD | .238** | 3.536 | Lifetime SUD | .238** | 3.536 | Lifetime SUD | .203** | 2.975 | Lifetime SUD | .237** | 3.488 |
| Step 2 | Step 2 | Step 2 | Step 2 | Step 2 | ||||||||||
| Lifetime SUD | .192** | 2.818 | Lifetime SUD | .240** | 3.565 | Lifetime SUD | .214** | 3.245 | Lifetime SUD | .201** | 2.065 | Lifetime SUD | .234** | 3.455 |
| BAS | .171* | 2.522 | BIS | .066 | .979 | Funseeking | .232** | 3.515 | Reward | .083 | 1.214 | Drive | .096 | 1.413 |
| Step 3 | Step 3 | Step 3 | Step 3 | Step 3 | ||||||||||
| Lifetime SUD | .147* | 2.112 | Lifetime SUD | .173* | 2.541 | Lifetime SUD | .179** | 2.638 | Lifetime SUD | .142* | 2.065 | Lifetime SUD | .174* | 2.517 |
| BAS | .089 | 1.187 | BIS | .097 | 1.465 | Funseeking | .155* | 2.062 | Reward | .050 | .750 | Drive | .009 | .126 |
| IN | .192* | 2.488 | IN | .252*** | 3.671 | IN | .159* | 2.043 | IN | .229** | 3.293 | IN | .231** | 3.094 |
| Step 4 | Step 4 | Step 4 | Step 4 | Step 4 | ||||||||||
| Lifetime SUD | .146* | 2.096 | Lifetime SUD | .172* | 2.531 | Lifetime SUD | .177* | 2.612 | Lifetime SUD | .142* | 2.050 | Lifetime SUD | .174* | 2.505 |
| BAS | .088 | 1.171 | BIS | .100 | 1.496 | Funseeking | .156* | 2.066 | Reward | .052 | .770 | Drive | .008 | .115 |
| IN | .190* | 2.449 | IN | .250*** | 3.640 | IN | .155* | 1.981 | IN | .229** | 3.277 | IN | .230** | 3.059 |
| BAS x IN | .022 | .326 | BIS x IN | −.022 | .746 | Funseek x IN | .034 | .518 | Reward x IN | .040 | .603 | Drive x IN | .010 | .882 |
Note: SUD = Substance Use Disorder; BAS = Behavioral Activation Scale; BIS = Behavioral Inhibition Scale; IN = Impulsive Nonconformity. Model 1. R² =.041, F(1, 203)=8.569 for Step 1 (p = .004); Δ R² =.029, Δ F(1,202)=6.359 for Step 2 (p =.012), Δ R ² =.028, F(1, 201)=6.188 for Step 3 (p = .014); Δ R² =.000, Δ F(1,200)=.106 for Step 4 (p =.745). Model 2. R² = .057, F(1, 208) = 12.505 for Step 1 (p = .001), Δ R² =.004, Δ F(1, 207) = .959 for Step 2 (p =.329), Δ R² = .058, F(1, 206) = 13.473 for Step 3 (p = .000), Δ R² =.000, Δ F(1, 205) = .105 for Step 4 (p =.746). Model 3. R² = .057, F(1, 208)=12.505 for Step 1 (p = .001); Δ R² =.053, Δ F(1,207)=12.354 for Step 2 (p =.001), Δ R² =.018, Δ F(1,206)=4.176 for Step 3 (p =.042), Δ R² =.001, Δ F(1,205)=.268 for Step 4 (p =.605). Model 4. R² =.041, F(1, 206)=8.849 for Step 1 (p = .003); Δ R² =.007, Δ F(1,205)=1.473 for Step 2 (p =.226), Δ R² =.048, F(1, 204)=10.847 for Step 3 (p = .001); Δ R² =.002, Δ F(1,203)=.364 for Step 4 (p =.547). Model 5. R² =.056, F(1, 205)=12.163 for Step 1 (p = .001); Δ R² =.009, Δ F(1,204)=1.998 for Step 2 (p =.159); Δ R² =.042, Δ F(1,203)=9.574 for Step 3 (p =.002); Δ R² =.000, Δ F(1,202)=.022 for Step 4 (p =.882).
p < .001,
p < .01,
p < .05.