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Table 3 Pattern matrix for polychoric PCA after Direct Oblimin rotation (N = 275)

From: Assessing subtypes of restricted and repetitive behaviour using the Adult Repetitive Behaviour Questionnaire-2 in autistic adults

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
  1. Items in italics met the item threshold (>.4) for that component