4.5 Conclusion
In sum, our study examines whether fCIT can be used to detect concealed autobiographical information. We found that the probe elicited a conflict-monitoring more negative N200 and a more positive recognition P300 than the irrelevants in the guilty participants, but not in the innocent participants. We also note that feedback following the probe elicited a greater feedback P300 than feedback following the irrelevants, again, in the guilty but not the innocent group. Further, individual analyses found that conflict-monitoring N200 (AUC=0.77), recognition P300 (AUC=0.91), and feedback P300 (AUC=0.96) could efficiently distinguish guilty from innocent participants. Exploratory analysis found that when the P200 component is included as an additional indicator, the deception detection efficiency of the combination of P200, N200, P300 and feedback P300 can reach a near-perfect AUC of 0.99. These results provide evidence that combining recognition, conflict-monitoring and feedback-related ERPs can effectively detect concealed autobiographical information in fCIT.