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. 2020 Sep 16;15(9):e0238517. doi: 10.1371/journal.pone.0238517

Table 10. Component derived from PCA on the variables measured in the attention subtest.

Variable Attentiveness
Total duration of looking at human 0.772
Total duration of looking at O in human condition -0.766
Total duration of looking at toy 0.733
Total duration of looking at O in toy condition -0.713
Eigenvalue 2.23
Explained variance (%) 55.69

KMO = 0.618; Bartlett: χ2 = 93.36, df = 6, p < 0.001.