| Level of interest in environmental issues | Building owner (a) | 3.41 | 1.02 | 13.354/ .000** | a<b, c |
| Public official (b) | 4.00 | .85 |
| Expert (c) | 3.97 | .86 |
| Average | 3.82 | .93 | - | - |
| Whether environmental conservation is more important than economic development | Building owner (a) | 3.25 | 1.03 | 12.153/ .000** | a<b, c |
| Public official (b) | 3.75 | .85 |
| Expert (c) | 3.81 | .76 |
| Average | 3.63 | .91 | - | - |
| Whether private property rights should be limited, green land should be secured for public health and environmental benefits | Building owner (a) | 3.34 | .96 | 6.457/ .002** | a<b |
| Public official (b) | 3.77 | .83 |
| Expert (c) | 3.65 | 1.00 |
| Average | 3.63 | .93 | - | - |