Factor | M | SD | Skewness | Kurtosis | 1 | 2 | 3 | 4 |
---|---|---|---|---|---|---|---|---|
1—Speaking | 3.20 | 0.78 |  − 0.15 |  − 0.72 | 0.86 | .51** | .39** | .49** |
2—Writing | 3.54 | 0.64 |  − 0.36 |  − 0.08 |  | 0.83 | .35** | .42** |
3—Reading | 2.84 | 0.69 |  − 0.05 |  − 0.31 |  |  | 0.85 | .42** |
4—Listening | 2.56 | 0.75 | 0.16 |  − 0.60 |  |  |  | 0.85 |