Table 1.
Principal components analysis of the SINS-J.
Item | Communality | First Principal Unrotated component | Factor loadings |
|||
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | |||
21 | 0.644 | 0.649 | 0.759 | 0.124 | −0.055 | 0.220 |
20 | 0.573 | 0.632 | 0.714 | 0.193 | −0.047 | 0.153 |
11 | 0.512 | 0.573 | 0.678 | −0.040 | 0.195 | 0.118 |
39 | 0.531 | 0.691 | 0.647 | 0.260 | 0.141 | 0.156 |
40 | 0.463 | 0.602 | 0.623 | 0.257 | 0.096 | −0.001 |
24 | 0.494 | 0.668 | 0.607 | 0.228 | 0.120 | 0.244 |
14 | 0.454 | 0.621 | 0.602 | 0.209 | 0.215 | 0.031 |
8 | 0.476 | 0.492 | 0.594 | 0.020 | 0.307 | −0.168 |
23 | 0.512 | 0.617 | 0.591 | 0.090 | 0.068 | 0.390 |
9 | 0.522 | 0.624 | 0.579 | 0.102 | 0.420 | 0.009 |
15 | 0.416 | 0.602 | 0.575 | 0.201 | 0.084 | 0.194 |
34 | 0.434 | 0.644 | 0.516 | 0.199 | 0.286 | 0.214 |
13 | 0.425 | 0.599 | 0.511 | 0.330 | 0.232 | −0.040 |
12 | 0.486 | 0.556 | 0.507 | 0.118 | 0.451 | −0.105 |
43 | 0.428 | 0.615 | 0.507 | 0.394 | 0.112 | 0.063 |
31 | 0.518 | 0.506 | 0.156 | 0.693 | 0.107 | 0.047 |
42 | 0.437 | 0.486 | 0.215 | 0.621 | 0.016 | 0.071 |
41 | 0.442 | 0.493 | 0.189 | 0.611 | −0.001 | 0.181 |
38 | 0.368 | 0.355 | 0.010 | 0.597 | 0.088 | 0.063 |
16 | 0.333 | 0.397 | 0.088 | 0.556 | 0.113 | 0.056 |
36 | 0.435 | 0.577 | 0.254 | 0.556 | 0.156 | 0.195 |
17 | 0.368 | 0.492 | 0.217 | 0.549 | 0.116 | 0.073 |
27 | 0.421 | 0.561 | 0.248 | 0.510 | 0.092 | 0.300 |
5 | 0.316 | 0.413 | 0.078 | 0.462 | 0.308 | 0.037 |
7 | 0.537 | 0.477 | 0.242 | 0.065 | 0.688 | 0.023 |
4 | 0.545 | 0.487 | 0.131 | 0.116 | 0.683 | 0.218 |
33 | 0.413 | 0.440 | 0.065 | 0.206 | 0.562 | 0.225 |
6 | 0.407 | 0.500 | 0.193 | 0.333 | 0.508 | 0.009 |
1 | 0.356 | 0.408 | 0.107 | 0.073 | 0.470 | 0.344 |
29 | 0.391 | 0.509 | 0.249 | 0.090 | 0.413 | 0.388 |
35 | 0.541 | 0.401 | 0.009 | 0.099 | 0.242 | 0.757 |
25 | 0.641 | 0.465 | 0.154 | 0.213 | 0.001 | 0.757 |
22 | 0.612 | 0.493 | 0.279 | 0.059 | 0.065 | 0.725 |
28 | 0.415 | 0.429 | 0.029 | 0.280 | 0.252 | 0.522 |
Cronbach's α | 0.906 | 0.803 | 0.730 | 0.779 |
Loadings on putative factors are shown in bold; for item labels see Appendix.
Kaiser-Meyer-Olkin test = 0.92; Bartlett's test of sphericity P < 0.001.