| 变量 | RD | DT | DT2 | Edu | Tech |
| RD | 1 |
|
|
|
|
| DT | 0.155** | 1 |
|
|
|
| DT2 | 0.150** | 0.971** | 1 |
|
|
| Edu | 0.416** | 0.126** | 0.140** | 1 |
|
| Tech | 0.389** | 0.065** | 0.060** | −0.013 | 1 |