Table 2. The inter-item correlation matrices.
| K3 | K4 | K5 | K6 | K7 | K8 | K9 | K10 | K11 | K12 | K13 | K14 | K15 | K16 | K17 | K18 | K19 | K20 | K21 | K2 | K23 | K24 | K25 | K26 | K27 | K28 | K29 | K30 | K31 | K33 | K34 | K35 | K36 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| K3 | |||||||||||||||||||||||||||||||||
| K4 | 0.72 | ||||||||||||||||||||||||||||||||
| K5 | 0.68 | 0.69 | |||||||||||||||||||||||||||||||
| K6 | 0.67 | 0.62 | 0.65 | ||||||||||||||||||||||||||||||
| K7 | 0.60 | 0.60 | 0.64 | 0.68 | |||||||||||||||||||||||||||||
| K8 | 0.38 | 0.39 | 0.41 | 0.38 | 0.37 | ||||||||||||||||||||||||||||
| K9 | 0.46 | 0.43 | 0.40 | 0.45 | 0.48 | 0.52 | |||||||||||||||||||||||||||
| K10 | 0.41 | 0.46 | 0.44 | 0.35 | 0.44 | 0.56 | 0.61 | ||||||||||||||||||||||||||
| K11 | 0.28 | 0.32 | 0.29 | 0.31 | 0.33 | 0.43 | 0.35 | 0.46 | |||||||||||||||||||||||||
| K12 | 0.30 | 0.40 | 0.28 | 0.27 | 0.35 | 0.43 | 0.34 | 0.53 | 0.47 | ||||||||||||||||||||||||
| K13 | 0.39 | 0.44 | 0.31 | 0.35 | 0.40 | 0.34 | 0.40 | 0.34 | 0.45 | 0.38 | |||||||||||||||||||||||
| K14 | 0.40 | 0.45 | 0.42 | 0.38 | 0.41 | 0.38 | 0.49 | 0.43 | 0.46 | 0.40 | 0.45 | ||||||||||||||||||||||
| K15 | 0.32 | 0.39 | 0.32 | 0.32 | 0.39 | 0.42 | 0.41 | 0.32 | 0.48 | 0.43 | 0.65 | 0.55 | |||||||||||||||||||||
| K16 | 0.51 | 0.46 | 0.42 | 0.40 | 0.45 | 0.37 | 0.41 | 0.29 | 0.29 | 0.32 | 0.47 | 0.58 | 0.57 | ||||||||||||||||||||
| K17 | 0.44 | 0.36 | 0.46 | 0.44 | 0.53 | 0.33 | 0.32 | 0.30 | 0.37 | 0.28 | 0.37 | 0.40 | 0.46 | 0.60 | |||||||||||||||||||
| K18 | 0.32 | 0.33 | 0.21 | 0.24 | 0.35 | 0.31 | 0.28 | 0.35 | 0.44 | 0.59 | 0.39 | 0.41 | 0.36 | 0.30 | 0.29 | ||||||||||||||||||
| K19 | 0.48 | 0.40 | 0.48 | 0.48 | 0.50 | 0.36 | 0.32 | 0.27 | 0.39 | 0.31 | 0.42 | 0.50 | 0.48 | 0.51 | 0.57 | 0.40 | |||||||||||||||||
| K20 | 0.26 | 0.32 | 0.22 | 0.21 | 0.30 | 0.39 | 0.25 | 0.39 | 0.30 | 0.41 | 0.27 | 0.32 | 0.32 | 0.19 | 0.21 | 0.35 | 0.31 | ||||||||||||||||
| K21 | 0.34 | 0.30 | 0.33 | 0.33 | 0.31 | 0.40 | 0.33 | 0.42 | 0.33 | 0.42 | 0.33 | 0.38 | 0.33 | 0.29 | 0.31 | 0.35 | 0.30 | 0.45 | |||||||||||||||
| K22 | 0.39 | 0.36 | 0.37 | 0.28 | 0.36 | 0.45 | 0.38 | 0.41 | 0.46 | 0.46 | 0.46 | 0.54 | 0.50 | 0.45 | 0.37 | 0.44 | 0.54 | 0.35 | 0.48 | ||||||||||||||
| K23 | 0.30 | 0.36 | 0.31 | 0.26 | 0.25 | 0.35 | 0.30 | 0.40 | 0.65 | 0.43 | 0.46 | 0.44 | 0.48 | 0.35 | 0.34 | 0.44 | 0.42 | 0.33 | 0.34 | 0.55 | |||||||||||||
| K24 | 0.42 | 0.45 | 0.36 | 0.43 | 0.39 | 0.38 | 0.46 | 0.40 | 0.49 | 0.36 | 0.52 | 0.57 | 0.58 | 0.60 | 0.51 | 0.43 | 0.53 | 0.28 | 0.36 | 0.52 | 0.55 | ||||||||||||
| K25 | 0.26 | 0.36 | 0.24 | 0.16 | 0.28 | 0.39 | 0.31 | 0.49 | 0.36 | 0.56 | 0.36 | 0.36 | 0.68 | 0.30 | 0.24 | 0.48 | 0.23 | 0.43 | 0.52 | 0.43 | 0.34 | 0.39 | |||||||||||
| K26 | 0.42 | 0.34 | 0.38 | 0.45 | 0.41 | 0.38 | 0.50 | 0.43 | 0.32 | 0.39 | 0.30 | 0.340 | 0.41 | 0.33 | 0.37 | 0.28 | 0.44 | 0.35 | 0.48 | 0.47 | 0.29 | 0.46 | 0.38 | ||||||||||
| K27 | 0.26 | 0.26 | 0.18 | 0.23 | 0.29 | 0.24 | 0.22 | 0.33 | 0.42 | 0.31 | 0.33 | 0.39 | 0.37 | 0.25 | 0.27 | 0.27 | 0.34 | 0.32 | 0.42 | 0.38 | 0.41 | 0.42 | 0.42 | 0.41 | |||||||||
| K28 | 0.33 | 0.31 | 0.30 | 0.45 | 0.37 | 0.37 | 0.46 | 0.45 | 0.30 | 0.31 | 0.24 | 0.39 | 0.33 | 0.27 | 0.34 | 0.23 | 0.40 | 0.33 | 0.49 | 0.46 | 0.26 | 0.43 | 0.38 | 0.61 | 0.44 | ||||||||
| K29 | 0.40 | 0.43 | 0.44 | 0.43 | 0.47 | 0.31 | 0.29 | 0.35 | 0.38 | 0.37 | 0.30 | 0.41 | 0.26 | 0.37 | 0.46 | 0.34 | 0.43 | 0.36 | 0.36 | 0.40 | 0.31 | 0.45 | 0.37 | 0.47 | 0.36 | 0.51 | |||||||
| K30 | 0.20 | 0.28 | 0.24 | 0.26 | 0.23 | 0.28 | 0.38 | 0.34 | 0.44 | 0.34 | 0.33 | 0.4 | 0.43 | 0.37 | 0.29 | 0.23 | 0.36 | 0.32 | 0.41 | 0.39 | 0.53 | 0.59 | 0.33 | 0.47 | 0.54 | 0.45 | 0.47 | ||||||
| K31 | 0.23 | 0.25 | 0.13 | 0.16 | 0.29 | 0.20 | 0.26 | 0.32 | 0.39 | 0.41 | 0.39 | 0.33 | 0.39 | 0.27 | 0.28 | 0.43 | 0.34 | 0.4 | 0.44 | 0.43 | 0.39 | 0.44 | 0.42 | 0.37 | 0.45 | 0.33 | 0.35 | 0.47 | |||||
| K33 | 0.32 | 0.30 | 0.29 | 0.25 | 0.32 | 0.37 | 0.39 | 0.37 | 0.54 | 0.46 | 0.40 | 0.47 | 0.52 | 0.43 | 0.34 | 0.41 | 0.44 | 0.28 | 0.36 | 0.56 | 0.55 | 0.52 | 0.36 | 0.42 | 0.37 | 0.31 | 0.35 | 0.53 | 0.41 | ||||
| K34 | 0.39 | 0.40 | 0.34 | 0.36 | 0.40 | 0.28 | 0.32 | 0.37 | 0.39 | 0.37 | 0.38 | 0.41 | 0.40 | 0.33 | 0.35 | 0.35 | 0.46 | 0.36 | 0.35 | 0.43 | 0.37 | 0.40 | 0.38 | 0.48 | 0.43 | 0.48 | 0.43 | 0.38 | 0.46 | 0.46 | |||
| K35 | 0.31 | 0.38 | 0.29 | 0.35 | 0.26 | 0.27 | 0.40 | 0.35 | 0.41 | 0.31 | 0.43 | 0.51 | 0.45 | 0.42 | 0.28 | 0.37 | 0.35 | 0.24 | 0.39 | 0.45 | 0.49 | 0.66 | 0.26 | 0.39 | 0.27 | 0.32 | 0.32 | 0.50 | 0.40 | 0.58 | 0.41 | ||
| K36 | 0.27 | 0.23 | 0.21 | 0.23 | 0.26 | 0.20 | 0.12 | 0.22 | 0.34 | 0.33 | 0.35 | 0.37 | 0.31 | 0.26 | 0.28 | 0.30 | 0.40 | 0.34 | 0.44 | 0.43 | 0.34 | 0.33 | 0.32 | 0.37 | 0.40 | 0.29 | 0.31 | 0.25 | 0.43 | 0.32 | 0.51 | 0.23 |