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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Soc Neurosci. 2016 Feb 25;12(1):8–21. doi: 10.1080/17470919.2016.1149095

Figure 2.

Figure 2

N = 109. Cortisol levels in log-transformed units by age group (9–10 years vs. 15–16 years) and speech preparation condition (parent vs. friend). Sample 1 was collected at the beginning of the speech preparation period, and samples 2–7 were collected every 10 minutes thereafter. Samples 4–6 represent the peak of cortisol production post-TSST that occurred 20–40 minutes after the onset of the TSST. Means for each group were calculated controlling for the effect of sex and time since wake. The effect of condition is significant in the adolescents age 15–16, p < 0.05, but not the children age 9–10, p > .10.