Combining the P300-complex trial-based concealed information test and the reaction time-based autobiographical implicit association test in concealed memory detection

Psychophysiology. 2012 Aug;49(8):1090-100. doi: 10.1111/j.1469-8986.2012.01389.x. Epub 2012 Jun 8.


Despite the P300-concealed information test's validity in detecting concealed memory when it is conducted immediately after the mock crime, whether the P300-CIT's detection efficiency is moderated by time delay remains unknown. Here, we conducted a mock crime study in which guilty participants were tested immediately after the mock crime or 1 month later. An innocent group was also tested. Assuming that the autobiographical Implicit Association Test (aIAT) and the P300-CIT rely on nonoverlapping mechanisms for memory detection, participants were tested using both the P300-CIT and the reaction time (RT)-based aIAT. Results suggested that the sensitivity of both tests remains even after the 1-month delay. The indicators from the RT-aIAT and P300-CIT were uncorrelated, thus combining P300-CIT and aIAT data further increased the efficiency of memory detection.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Association*
  • Crime / psychology
  • Data Interpretation, Statistical
  • Electrophysiological Phenomena
  • Event-Related Potentials, P300 / physiology*
  • Female
  • Guilt
  • Humans
  • Lie Detection / psychology*
  • Male
  • Memory, Episodic*
  • ROC Curve
  • Reaction Time / physiology*
  • Young Adult