Loadings^a on the first five factors extracted by principal component analysis, after orthogonal rotation, of variables recorded in barren housed pigs (n = 212) during a back test at 2 weeks of age, a novel environment test at 3 weeks of age and a novel object test at 13 weeks of age, including saliva cortisol variables.

<p>Proportions of total variation explained by each factor are given.</p>a<p>Loadings >0.30 or <−0.30 are indicated in italics, and loadings >0.50 or <−0.50 are also indicated in bold.</p><p>Loadings^{<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0107040#nt126" target="_blank">a</a>} on the first five factors extracted by principal component analysis, after orthogonal rotation, of variables recorded in barren housed pigs (n = 212) during a back test at 2 weeks of age, a novel environment test at 3 weeks of age and a novel object test at 13 weeks of age, including saliva cortisol variables.