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