Table 3.
Standardised factor loadings for correlated factors, bi-factor and hierarchical models.
| Correlated Model | Bi-factor Model | Hierarchical Model | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subtest | Factor | Load | Subtest | Factor | Load | Factor | Load | Subtest | Factor | Load | Factor | Load |
| Si | VC | 0.72 | Si | VC | 0.37 | G | 0.61 | Si | VC | 0.73 | G | 0.74 |
| Vo | VC | 0.82 | Vo | VC | 0.53 | G | 0.61 | Vo | VC | 0.81 | “ | “ |
| Inf | VC | 0.69 | Inf | VC | 0.55 | G | 0.49 | Inf | VC | 0.7 | “ | “ |
| BD | PR | 0.8 | BD | PR | 0.5 | G | 0.66 | BD | PR | 0.8 | G | 0.88 |
| MR | PR | 0.67 | MR | PR | 0.08* | G | 0.69 | MR | PR | 0.68 | “ | “ |
| VP | PR | 0.75 | VP | PR | 0.53 | G | 0.6 | VP | PR | 0.74 | “ | “ |
| DS | WM | 0.76 | DS | WM | 0.31 | G | 0.76 | DS | WM | 0.83 | G | 0.95 |
| Ar | WM | 0.8 | Ar | WM | 0.19 | G | 0.8 | Ar | WM | 0.82 | “ | “ |
| SS | PS | 0.68 | SS | PS | 0.64 | G | 0.68 | SS | PS | 0.8 | G | 0.82 |
| Cd | PS | 0.74 | Cd | PS | 0.41 | G | 0.74 | Cd | PS | 0.91 | “ | “ |
Notes: Subtest; Si = Similarities; Vo = Vocabulary; Inf = Information; BD = Block Design; MR = Matrix Reasoning; VP = Visual Puzzles; DS = Digit Span; Ar = Arithmetic; SS = Symbol Search; Cd = Coding. Factor; VC = Verbal Comprehension; PR = Perceptual Reasoning; WM = Working Memory; PS = Processing Speed. Load = standardized factor loading, all loadings significant at <0.05, except for Bi-factor Model loading MR on PR*.