– The social interaction between a deceiver and the deceived opponent is a determining factor for deception that involves emotions. Hence, besides a great amount of cognitive control, a successful lie also requires the regulation of emotions, especially when deceiving somebody face-to-face. The purpose of this paper is to investigate emotion regulation processes in an interpersonal lying experiment and aimed to examine whether fraudsters have well-functioning emotion regulation strategies or show a lack of emotional processes when deceiving face-to-face.
– Imprisoned fraudsters (n=11), imprisoned violent offenders (n=10) and non-offenders (n=11) spontaneously deceived an interrogator in a face-to-face situation while the deceivers’ EEG was recorded.
– The results showed that a decrease of alpha activity in left dorsolateral prefrontal cortex (dlPFC) predicted a higher frequency of deceptive responses as well as less guilt about deceiving the interrogator. These findings suggest a pivotal role of the left dlPFC in emotion regulation during deception for fraudsters, violent offenders and non-offenders. Unlike violent offenders, fraudsters did not show differences in alpha activity of the dlPFC between truthful and deceptive responses, suggesting that fraudsters are better at emotion regulation while deceiving their opponents.
– This study emphasizes the recruitment of emotion regulation processes during deception. The results give first insight into the emotional processes underlying deception in fraudsters.
