Sense of guilt can be caused by the violation of own’s inner values (deontological guilt) or of interpersonal rules (altruistic guilt).

Deontological rather than altruistic guilt plays a crucial role in the genesis and maintenance of Obsessive- Compulsive Disorder (OCD). Using the Temptation to Lie Card Game, we plan to investigate whether: i) the induction of deontological and altruistic guilt differentially modulates interpersonal deception; ii) would differentially affect moral behavior of OCD patients; iii) the different effects of deontological and altruistic guilt on moral decisions are linked to modulation of the motor readiness potential (using EEG).