Table 2.

Comparison of voting proportions before and after Web research by group for studies 1 and 2

StudyExperimentGroupSimulated vote before Web researchχ2Simulated vote after Web researchχ2VMP
GillardAbbottGillardAbbott
1118265.40922128.870*48.4%**
211231024
317171420
2116182.19727714.274***63.3%***
220141222
314202212
3117172.19922123.84536.7%*
221131519
315191519
2413173831.047489211196.280***37.1%***
2316384228472
3333367377323
  • McNemar's test was conducted to assess VMP significance. VMP, percent increase in subjects in the bias groups combined who said that they would vote for the favored candidate.

  • * P < 0.05; **P < 0.01; and ***P < 0.001: Pearson χ2 tests were conducted among all three groups.