Table 4.
Principal components analyses.
| Factors |
||||
|---|---|---|---|---|
| VCI (31.87%) | POI (14.33%) | WMI (9.53%) | PSI (8.15%) | |
| SA participants | ||||
| Information | 0.839 | |||
| Vocabulary | 0.816 | |||
| Similarities | 0.763 | |||
| Comprehension | 0.754 | |||
| Arithmetic | 0.570 | 0.414 | ||
| Matrix Reasoning | 0.771 | |||
| Picture Completion | 0.765 | |||
| Block Design | 0.596 | |||
| Picture Arrangement | 0.495 | |||
| Digit Span | 0.819 | |||
| Letter–Number Sequencing | 0.776 | |||
| Digit-Symbol Coding | 0.886 | |||
| Symbol Search | 0.735 | |||
| UK Participants | ||||
| POI (41.16%) | VCI (16.21%) | WMI (9.86%) | ||
| Picture Arrangement | 0.830 | |||
| Symbol Search | 0.765 | |||
| Digit-Symbol Coding | 0.754 | |||
| Picture Completion | 0.673 | |||
| Matrix Reasoning | 0.655 | |||
| Block Design | 0.632 | |||
| Vocabulary | 0.850 | |||
| Similarities | 0.843 | |||
| Information | 0.810 | |||
| Comprehension | 0.739 | 0.448 | ||
| Digit Span | 0.875 | |||
| Letter–Number Sequencing | 0.807 | |||
| Arithmetic | 0.411 | 0.513 | ||
VCI, Verbal Comprehension Index; POI, Perceptual Organization Index; WMI, Working Memory Index; PSI, Processing Speed Index.