Table 1.
The Effect of Key Experimental Manipulations on Willingness to Participate (Web Experiment)
| First vignette
|
All vignettes
|
|||
|---|---|---|---|---|
| Coefficient | (Std. err.) | Coefficient | (Std. err.) | |
| Intercept | 7.993*** | (0.186) | 7.668*** | (0.088) |
| Risk | ||||
| One in ten | −0.287 | (0.236) | −0.485*** | (0.067) |
| One in a million | 0.162 | (0.237) | −0.0083 | (0.067) |
| No chance | 0.114 | (0.252) | −0.036 | (0.067) |
| No mention | – | – | – | – |
| Sensitivity (1=high) | −2.724*** | (0.199) | −3.009*** | (0.055) |
| Prime (1=privacy) | −0.440*** | (0.199) | −0.429*** | (0.086) |
| Incentive (1=high) | 0.285** | (0.098) | 0.270*** | (0.072) |
| Mode (1=FTF) | −0.184 | (0.098) | −0.324*** | (0.072) |
| Risk × sensitivity | ||||
| 1/10, high | −0.276 | (0.279) | −0.221** | (0.078) |
| 1/million, high | 0.433 | (0.277) | 0.076 | (0.078) |
| No chance, high | −0.056 | (0.281) | −0.090 | (0.078) |
| Risk × privacy prime | ||||
| 1/10, privacy | −0.278 | (0.279) | −0.070 | (0.078) |
| 1/million, privacy | −0.247 | (0.278) | −0.083 | (0.078) |
| No chance, privacy | −0.078 | (0.282) | −0.028 | (0.078) |
| Vignette number | −0.036*** | (0.006) | ||
| Observations | 4,587 | 36,584 | ||
| Model adjusted R2 | 0.153 | 0.174 | ||