Increasing the number of irrelevant stimuli increases ability to detect countermeasures to the P300-based Complex Trial Protocol for concealed information detection.

@article{Hu2012IncreasingTN,
  title={Increasing the number of irrelevant stimuli increases ability to detect countermeasures to the P300-based Complex Trial Protocol for concealed information detection.},
  author={Xiaoqing Hu and Daniel J. Hegeman and Elizabeth Landry and J. Peter Rosenfeld},
  journal={Psychophysiology},
  year={2012},
  volume={49 1},
  pages={85-95}
}
UNLABELLED We previously found that simultaneously executing a mental countermeasure and an explicit required response impairs reaction time (RT)-based detection of countermeasure use in a P300- based concealed information test. To address this issue, we increased the numbers of irrelevant stimuli to eight, and manipulated the proportions of to-be-countered irrelevant stimuli from 25% to 50% to 75% in three groups. RESULTS Based on P300 data, 100% of the simple guilty (no countermeasure use… CONTINUE READING
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P300 in detecting concealed information

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