Westenberg P Michiel, Bokhorst Caroline L, Miers Anne C, Sumter Sindy R, Kallen Victor L, van Pelt Johannes, Blöte Anke W
Department of Psychology, Leiden University, The Netherlands.
Biol Psychol. 2009 Oct;82(2):116-24. doi: 10.1016/j.biopsycho.2009.06.005. Epub 2009 Jul 1.
This study describes a new public speaking protocol for youth. The main question asked whether a speech prepared at home and given in front of a pre-recorded audience creates a condition of social-evaluative threat. Findings showed that, on average, this task elicits a moderate stress response in a community sample of 83 12- to 15-year-old adolescents. During the speech, participants reported feeling more nervous and having higher heart rate and sweatiness of the hands than at baseline or recovery. Likewise, physiological (heart rate and skin conductance) and neuroendocrine (cortisol) activity were higher during the speech than at baseline or recovery. Additionally, an anticipation effect was observed: baseline levels were higher than recovery levels for most variables. Taking the anticipation and speech response together, a substantial cortisol response was observed for 55% of participants. The findings indicate that the Leiden Public Speaking Task might be particularly suited to investigate individual differences in sensitivity to social-evaluative situations.
本研究描述了一种针对青少年的新的公开演讲方案。主要问题是，在家准备并在预先录制的观众面前进行的演讲是否会产生社会评价威胁的情况。研究结果表明，平均而言，这项任务在83名12至15岁青少年的社区样本中引发了适度的应激反应。在演讲过程中，参与者报告称，与基线或恢复阶段相比，他们感觉更紧张，心率更高，手部出汗更多。同样，生理（心率和皮肤电导率）和神经内分泌（皮质醇）活动在演讲期间高于基线或恢复阶段。此外，还观察到一种预期效应：大多数变量的基线水平高于恢复水平。综合预期和演讲反应来看，55%的参与者出现了显著的皮质醇反应。研究结果表明，莱顿公开演讲任务可能特别适合研究对社会评价情境敏感性的个体差异。
