测谎问题中的“情绪成分”对皮肤电反应的影响

The Effect of Emotionality in Lie- detection Questions on Skin Conductance Response

目的:探讨测谎中个体情绪状态与皮肤电反应之间的关系,为改进测谎技术提供依据。方法:以38名大学生作为被试,以不同情绪激起程度的不良行为为素材进行测谎测试。结果:不同条件下被试皮肤电反应差异显著,其中高情绪激起问题和相关问题上的皮肤电反应更为强烈。结论:在一定的情景压力下,个体的情绪状态可以直接影响皮肤电活动;高情绪激起问题在鉴别说谎与诚实上,更加有效;除了说谎因素,测谎中测题本身所指向的事件就可以直接引起被试的情绪反应,从而产生皮肤电反应差异;当情景线索明确时,特定的目标事件更容易引起被试的关注,产生特殊的皮肤电反应。

Objective： to examine the relationship between emotional states and skin conductance response during lie-detection and to provide evidence for improvement of lie-detection technique. Methods： 38 university students participated in the study. They were provided with antisocial behavior materials that elicited different levels of emotional arousal. Results： Significant difference in skin conductance response was observed with the high emotionality items eliciting the highest skin conductance response. Conclusion： Under a certain level of pressure, individuals＇ emotional state has direct impact on skin conductance. High emotionality questions are better for detecting lies and honesty than low emotionality questions. In addition to lying, the questions themselves have direct impact on subjects＇ emotional responses, which in turn lead to skin conductance response. When cues for emotionality are obvious, related events tend to receive greater attention by subjects and thus lead to special skin conductance response.