Table 3 Suidae loadings. Loadings of the behaviors on the principal components with eigenvalue > 1 (PC1–PC4) extracted from the principal component analysis conducted on Suidae responses. Behaviors with a loading ≥ r = l0.45l appear in bold
From: Cross-species discrimination of vocal expression of emotional valence by Equidae and Suidae
PC1 | PC2 | PC3 | PC4 | ||||
|---|---|---|---|---|---|---|---|
1st behavior | −0.15 | 1st behavior | −0.20 | 1st behavior | −0.49 | 1st behavior | 0.59 |
1st vocalization | 0.44 | 1st vocalization | 0.01 | 1st vocalization | −0.07 | 1st vocalization | 0.04 |
1st movement | 0.29 | 1st movement | 0.36 | 1st movement | −0.41 | 1st movement | 0.41 |
Standing | 0.56 | Standing | 0.47 | Standing | −0.53 | Standing | −0.26 |
Walking | 0.44 | Walking | −0.69 | Walking | 0.29 | Walking | 0.06 |
Head movements | 0.83 | Head movements | −0.04 | Head movements | 0.12 | Head movements | 0.08 |
Head on the middle | 0.51 | Head on the middle | 0.54 | Head on the middle | 0.34 | Head on the middle | 0.27 |
Head low | 0.18 | Head low | 0.00 | Head low | −0.07 | Head low | −0.66 |
Ears on the sides | 0.83 | Ears on the sides | −0.04 | Ears on the sides | −0.29 | Ears on the sides | −0.23 |
Tail high | 0.69 | Tail high | −0.12 | Tail high | 0.33 | Tail high | 0.11 |
Grunt | 0.59 | Grunt | −0.16 | Grunt | 0.18 | Grunt | 0.16 |
Eating | 0.19 | Eating | −0.64 | Eating | −0.59 | Eating | −0.04 |
Eigenvalue | 1.83 | Eigenvalue | 1.27 | Eigenvalue | 1.22 | Eigenvalue | 1.09 |
Variance | 28% | Variance | 14% | Variance | 12% | Variance | 10% |