Table 3 Pattern matrix for polychoric PCA after Direct Oblimin rotation (N = 275)
Rotated item loadings: | Component 1 | Component 2 |
|---|---|---|
Insistence on Sameness (IS) | Repetitive sensory and motor behaviours (RSMB) | |
1. Arrange | .402 | .377 |
2. Fiddle | .038 | .783 |
3. Spin | − .156 | .800 |
4. Rock | −.052 | .815 |
5. Pace | .036 | .609 |
6. Hand/finger | .051 | .709 |
7. Fascination | .537 | .247 |
8. Angles | .368 | .361 |
9. Smell | .298 | .254 |
10. Feel | .258 | .490 |
11. Carry | .441 | .389 |
12. Collect | .670 | .128 |
13. Home | .885 | − .140 |
14. Change | .844 | − .115 |
15. Routine | .722 | .025 |
16. Redoing | .801 | − .042 |
17. TV/music | .496 | .341 |
18. Clothes | .493 | .311 |
19. Food | .523 | .052 |
Percentage of variance explained: | 37.6% | 11.5% |
Cronbach’s alpha (α): | .81 | .70 |
Mean inter-item correlation: | .29 | .29 |