Table 1.
Postsearch shifts in voting preferences for study 1
| Experiment | Candidate | Rating | Mean deviation from control (SE) | |||
| Gillard bias | u | Abbott bias | u | |||
| 1 | Gillard | Impression | 1.44 (0.56)* | 761.0 | −1.52 (0.56)** | 380.5 |
| Trust | 1.26 (0.53)** | 779.0 | −1.85 (0.48)** | 330.5 | ||
| Like | 0.26 (0.54) | 615.5 | −1.73 (0.65)** | 387.0 | ||
| Abbott | Impression | −2.29 (0.73)** | 373.0 | 1.11 (0.72)** | 766.5 | |
| Trust | −2.02 (0.63)** | 384.0 | 0.67 (0.76) | 679.0 | ||
| Like | −1.55 (0.71) | 460.5 | 1.17 (0.64)* | 733.0 | ||
| 2 | Gillard | Impression | 0.97 (0.65) | 704.0 | −2.38 (0.79)*** | 325.0 |
| Trust | 0.94 (0.72) | 691.5 | −2.17 (0.74)** | 332.5 | ||
| Like | 0.55 (0.76) | 639.5 | −1.82 (0.66)** | 378.0 | ||
| Abbott | Impression | −1.44 (0.81)* | 395.5 | 1.17 (0.75)* | 742.0 | |
| Trust | −0.79 (0.81) | 453.5 | 1.85 (0.72)** | 774.5 | ||
| Like | −1.44 (0.70)* | 429.0 | 0.64 (0.71) | 690.0 | ||
| 3 | Gillard | Impression | 1.44 (0.73)* | 717.5 | −0.55 (0.69) | 507.5 |
| Trust | 0.47 (0.70) | 620.0 | −0.23 (0.56) | 466.5 | ||
| Like | 0.44 (0.65) | 623.5 | −0.41 (0.70) | 528.5 | ||
| Abbott | Impression | −0.32 (0.70) | 534.0 | 1.26 (0.60)* | 750.5 | |
| Trust | −0.73 (0.65) | 498.5 | 1.50 (0.58)** | 795.0 | ||
| Like | −0.50 (0.61) | 496.0 | 0.88 (0.62) | 681.5 | ||
*
P < 0.05, **P < 0.01, and ***P < 0.001: Mann–Whitney u tests were conducted between the control group and each of the bias groups.