Table 2. The reliability and validity of questionnaires (N = 2,175).
| Variables | Items | Cronbach alpha | KMO | Mean ± SD | PCA (%) |
|---|---|---|---|---|---|
| Direct nature experience | 9 | 0.686 | 0.784 | 3.34 ± 0.85 | 49.91 |
| Indirect nature experience | 4 | 0.894 | 0.829 | 3.24 ± 1.17 | 70.17 |
| Vicarious nature experience | 4 | 0.763 | 0.765 | 3.45 ± 0.99 | 58.71 |
| Emotional connection | 7 | 0.754 | 0.847 | 4.25 ± 0.62 | 41.60 |
| Cognitive connection | 6 | 0.705 | 0.794 | 4.52 ± 0.51 | 41.33 |
| Pro-environmental behavior | 6 | 0.786 | 0.850 | 3.82 ± 0.73 | 48.72 |
| Pro-nature behavior | 7 | 0.840 | 0.842 | 3.03 ± 0.98 | 51.16 |