Table 9 Tetrachoric correlations between the sub-skills
From: Diagnosing EFL learners’ writing ability: a diagnostic classification modeling analysis
| CON | ORG | GRM | VOC | MCH | |
|---|---|---|---|---|---|
| CON | 1.00 | ||||
| ORG | 0.64 | 1.00 | |||
| GRM | 0.69 | 0.71 | 1.00 | ||
| VOC | 0.68 | 0.50 | 0.78 | 1.00 | |
| MCH | 0.69 | 0.64 | 0.87 | 0.63 | 1.00 |
