Fig 1.
Schematic representation of the temperament assessment test process (created using BioRender.com).
Table 1.
Correlations between temperament assessment scores and salivary cortisol and serotonin concentrations.
Fig 2.
Linear regression between changes in cortisol concentrations (pre- to post-assessment) and total average temperament assessment scores.
The analysis indicates a negative correlation (Spearman’s ρ = −0.526, p = 0.008) with an r² of 0.259 (p = 0.011) and an adjusted r² of 0.225.
Table 2.
Average temperament assessment scores of each group for cortisol and serotonin analyses.
Fig 3.
Salivary cortisol concentrations in high-, medium-, and low-scoring groups.
Cortisol concentrations were 5.996 ± 1.258 pg/mL (pre) and 6.295 ± 1.283 pg/mL (post) in the high-scoring group, 7.441 ± 2.379 pg/mL (pre) and 8.044 ± 1.296 pg/mL (post) in the medium-scoring group, and 11.581 ± 2.535 pg/mL (pre) and 31.213 ± 8.075 pg/mL (post) in the low-scoring group. Pre and Post indicate samples collected before and after temperament assessment, respectively. ** p < 0.010, * p < 0.050.
Fig 4.
Salivary serotonin concentrations in high-, medium-, and low-scoring groups.
Serotonin concentrations were 5.943 ± 1.958 ng/mL in the high-scoring group, 2.154 ± 0.666 ng/mL in the medium-scoring group, and 1.742 ± 0.348 ng/mL in the low-scoring group. * p < 0.050.