Table 4 Hierarchical regression analysis for persuasive system design categories predicting MARS sum score.
Model 1 | Model 2 | Model 3 | Model 4 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Variable | B | SE B | β | B | SE B | β | B | SE B | β | B | SE B | β |
Dialogue support | 0.26 | 0.03 | 0.64*** | 0.22 | 0.04 | 0.55*** | 0.21 | 0.04 | 0.52*** | 0.20 | 0.04 | 0.50*** |
Primary task support | 0.04 | 0.04 | 0.12 | 0.02 | 0.03 | 0.07 | 0.02 | 0.03 | 0.06 | |||
Social support | 0.11 | 0.04 | 0.20* | 0.11 | 0.04 | 0.20* | ||||||
System credibility | 0.04 | 0.03 | 0.10 | |||||||||
R2 | .41 | .41 | .44 | .44 | ||||||||
∆R2 | 0.000 | 0.028 | 0.004 | |||||||||
