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The effects of pre-viewing of mock crime scene on detection of deception using P300.

使用 P300 预览模拟犯罪现场对侦破欺骗行为的影响。

基本信息

批准号：
15530483
负责人：
HIRA Shinji
金额：
$ 1.09万
依托单位：
Fukuyama University (2004)University of East Asia (2003)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15530483/
关键词：
detection of deception event-related potential P300 mock crime previewing video context-dependency effect Guilty Knowledge Test 長期記憶再認促進

项目摘要

Japanese field polygraphy is unique in relying on the Guilty Knowledge Test (GKT) for determining guilt. A feature of field GKTs is that the interval between the commission of the crime and the testing is much longer (usually at least a month vs.a few minutes) than in laboratory GKTs. This fading of memory through time suggests that field accuracy is reduced relative to lab accuracy. The present study, with event-related potential(P300) as the dependent variable, was designed to test whether refreshing the memory of laboratory mock crime details just before the administration of the GKT would enhance GKT accuracy. The mock crime involved entering a room, and stealing an item (ring) from one of five desk drawers. The GKT was administered about a month after the mock crime. Just before the GKT, the refresh-memory group (RM) of 10 subjects viewed a video which depicted the room in which they had committed the mock crime about a month ago, while the remaining 10 subjects in the no-RM (NRM) control group viewed a video of the same length that depicted scenes from other parts of the college. GKT accuracy in both groups was high, with the critical-item pictures eliciting greater P300s than the non-critical pictures (p<.001), and the P300 measure identifying 17 of the 20 subjects correctly as guilty. However, GKT accuracy did not differ between the two groups. Future studies will test the hypothesis that to enhance GKT accuracy in the lab, one must not only cognitively refresh subjects' memories, but also motivate them to pay more attention the details of their mock crime.

日本野外测谎仪在依靠内疚知识测验(GKT)判定有罪方面是独一无二的。现场GKT的一个特点是，与实验室GKT相比，犯罪和检测之间的间隔时间要长得多(通常至少一个月而不是几分钟)。随着时间的推移，记忆的褪色表明，与实验室的准确度相比，现场准确度有所降低。本研究以事件相关电位(P300)为因变量，旨在检验在使用GKT之前刷新实验室模拟犯罪细节记忆是否会提高GKT的准确性。模拟犯罪包括进入一个房间，从五个抽屉中的一个抽屉里偷走一件物品(戒指)。GKT是在模拟犯罪后大约一个月进行的。就在GKT之前，由10名受试者组成的复习记忆组观看了一段描述他们一个月前模拟犯罪的房间的视频，而其余10名受试者则观看了一段相同长度的视频，描述了学院其他部分的场景。两组的GKT准确率都很高，关键项目图片比非关键项目图片诱发的P300更大(p&lt；.001)，P300测量正确地识别了20名受试者中的17名有罪。然而，GKT的准确性在两组之间没有差异。未来的研究将检验这一假设，即为了提高GKT在实验室中的准确性，一个人不仅必须从认知上更新受试者的记忆，还必须激励他们更多地关注他们模拟犯罪的细节。