Winograd Michael R, Rosenfeld J Peter
Department of Psychology, Northwestern University, Evanston, Illinois.
Psychophysiology. 2011 Feb;48(2):155-61. doi: 10.1111/j.1469-8986.2010.01054.x.
The Complex Trial Protocol (CTP), was shown to be an improvement over the previous "three stimulus" P300-based concealed information tests (CITs). Not only was it highly accurate with autobiographical information but was also resistant to the use of countermeasures (CMs). The current study applied the CTP to the detection of incidentally acquired information in a mock crime scenario. In previous "three stimulus" mock crime studies utilizing P300-based CITs, participants memorized a guilty knowledge item(s). Special care was taken in the current study to ensure that participants' knowledge of the guilty item in the mock crime was obtained only during the commission of the act in order to bolster ecological validity. Overall, 92% of all participants in guilty, innocent, and countermeasure conditions were correctly classified. CM use was again indexed by reaction times (RTs).
复杂试验方案（CTP）被证明比以前基于P300的“三刺激”隐蔽信息测试（CIT）有所改进。它不仅在自传信息方面具有高度准确性，而且还能抵抗对策（CM）的使用。当前的研究将CTP应用于模拟犯罪场景中偶然获取信息的检测。在以前利用基于P300的CIT进行的“三刺激”模拟犯罪研究中，参与者记住了有罪知识项目。在当前研究中特别注意确保参与者对模拟犯罪中有罪项目的了解仅在行为实施期间获得，以增强生态效度。总体而言，有罪、无罪和对策条件下的所有参与者中有92%被正确分类。CM的使用再次通过反应时间（RT）来衡量。
