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A meta-analysis of the P3 amplitude in tasks requiring deception in legal and social contexts.
Brain and Cognition ( IF 2.5 ) Pub Date : 2019-06-14 , DOI: 10.1016/j.bandc.2019.05.002
Anja Leue 1 , André Beauducel 2
Affiliation  

In deception tasks the parietal P3 amplitude of the event-related potential indicates either recognition of salient stimuli (larger P3 following salient information) or mental effort (smaller P3 following demanding information). This meta-analysis (k = 77) investigated population effect sizes (δ) for conceptual and methodological a-priori moderators (study design, pre-task scenario, context of deception tasks, and P3 quantification). Within-subject designs show evidence of the underlying cognitive processes, between-subject designs allow for comparisons of cognitive processes in culprits vs. innocents. Committed vs. imagined mock crime scenarios yield larger δ. Deception tasks with a legal context result in almost twice as large δ than deception tasks with social-evaluative and social-biographical contexts. Peak-to-peak P3 quantification resulted in larger δ than other quantifications. Counter-measure techniques in 3-stimulus protocols reduce the discriminability of concealed vs. truthful P3 amplitudes. Depending on stimulus knowledge, deception tasks provide evidence for the salience hypothesis and the mental effort hypothesis, respectively.

中文翻译:

对在法律和社会背景下需要欺骗的任务中P3幅度的荟萃分析。

在欺骗任务中,与事件相关的电位的顶P3幅度表示对显着刺激的识别(在显着信息后为较大的P3)或在精神上(在需要信息后为较小的P3)。这项荟萃分析(k = 77)研究了概念和方法上先验主持人(研究设计,任务前情景,欺骗任务的背景以及P3量化)的总体效应大小(δ)。受试者内部的设计显示了潜在的认知过程的证据,受试者之间的设计允许对罪犯与无辜者的认知过程进行比较。承诺的与想象的模拟犯罪情景产生较大的δ。具有法律背景的欺骗任务产生的δ值几乎是具有社会评估和社会传记环境的欺骗任务的两倍。峰-峰P3定量比其他定量产生更大的δ。3刺激方案中的对策技术降低了隐式和真实P3幅度的可分辨性。取决于刺激知识,欺骗任务分别为显着性假设和精神努力假设提供了证据。
更新日期:2019-11-01
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