Table 3.
Linear Regression Model of Vested Interest Moderating the Effect of Attitudes on Intentions
| Study 1a: Nonmedical Prescription Stimulants (N = 310) |
Study 1b: Marijuana (N = 93) |
|||||
|---|---|---|---|---|---|---|
| Predictors | B | SE | t(299) | B | SE | t(83) |
| Age | .06 | .05 | 1.14 | −.01 | .02 | −.55 |
| Sex | −.04 | .06 | −.75 | .01 | .02 | .57 |
| Race/ethnicity | ||||||
| Black | .09 | .05 | 1.76 | .01 | .02 | .33 |
| Asian | .05 | .05 | .91 | .00 | .02 | .04 |
| Hispanic | −.04 | .05 | −.78 | .02 | .02 | .90 |
| Other | .05 | .06 | .82 | .00 | .02 | −.02 |
| Mixed | −.05 | .06 | −.95 | --- | --- | --- |
| Attitudes | .64*** | .08 | 8.07 | .06** | .02 | 2.75 |
| Vested interest | .41*** | .07 | 5.70 | .11*** | .02 | 4.59 |
| Attitudes x vested interest interaction |
.34*** | .06 | 5.69 | .06** | .02 | 3.02 |
Note. The reference group for gender is male; the reference group for race/ethnicity is white. Predictor variables were z-scored to produce standardized (B) estimates. A log transformation was performed on intentions to use marijuana to reduce levels of skew and kurtosis (Study 1b).
*
p < .05
**
p < .01
***
p < .001