Table 7: Fisher-Hayter test statistics.
| Group comparisons: | 1 vs. 2 | 1 vs. 3 | 1 vs. 4 | 2 vs. 3 | 2 vs. 4 | 3 vs. 4 |
| Changes in general attitude and belief variables | ||||||
| Individual actions matter^ | 1.17 | 1.23 | 2.52 | 0.31 | 1.56 | 1.05 |
| Personal responsibility | 1.03 | 0.76 | 1.73 | 0.05 | 2.56 | 2.11 |
| NEP-based index | 2.11 | 3.37* | 0.48 | 1.7 | 1.23 | 2.53 |
| Changes in beliefs about plastic pollution | ||||||
| Causes litter | 2.13 | 4.25* | 1.3 | 2.57 | 3.02 | 4.79* |
| Causes landfill pollution | 1.96 | 0.22 | 0.13 | 1.31 | 1.71 | 0.3 |
| Causes ocean pollution | 1.11 | 1.39 | 4.13* | 0.52 | 3.21 | 2.25 |
| Changes in components of NEP-based index | ||||||
| Abuse^ | 3.81* | 2.47 | 2.11 | 0.52 | 0.98 | 0.38 |
| Spaceship^ | 0.23 | 1.84 | 0.33 | 1.66 | 0.14 | 1.33 |
| Balance of nature^ | 0.21 | 2.1 | 0.61 | 2.26 | 0.77 | 1.32 |
| Crisis exaggerated | 0.75 | 0.71 | 1.78 | 0.12 | 2.38 | 2.11 |
Treatment groups: 1: Saw text only; 2: Saw text + Whale; 3: Saw text + Photo; 4: Saw photo only.
Each row represents a separate regression from Table 6.
^Reverse coded; *Statistically significant at the 5% level (critical value 3.32).