How integrated are behavioral and endocrine stress response traits? A repeated measures approach to testing the stress-coping style model.

Although nominally significant ( P = 0.04; see Table S1 ), the likelihood ratio test applied makes an assumption of residual normality that is clearly violated as this is a binary trait.

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Given no evidence of among-individual significant covariance structure in I, we do not further consider pairwise estimates of correlations ( r I ) except to note that the estimate between F PRE and 11KT PRE was strongly positive and approaching significance ( r I = 0.768 [±0.389]).

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Thus, we conclude that robustly supported among-individual variance in endocrine state is limited to 11KT PRE , although we note that the estimate of V I for F PRE was marginally nonsignificant in the univariate analysis.

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