‘I knew all along’: making sense of post-self-deception judgments.

Individuals deceive themselves about a wide variety of subjects. In fortunate circumstances, where those who manage to leave self-deception embrace reality, an interesting phenomenon occurs: the formerly self-deceived often confess to having ‘known [the truth] all along’. These post-self-deception judgments are not conceptually innocuous; if genuine, they call into question the core feature of prominent theories of self-deception, namely that self-deceived individuals do not believe the unwelcome truth. In this paper I argue that post-self-deception judgments do not track a belief, but rather a suspicion of the unwelcome truth. I do this by showing that post-self-deception judgments are themselves instances of self-deception where the individual is self-deceived that they believed the unwelcome truth. I then suggest that the motivational cause of the self-deceit is hindsight bias, specifically the kind known as foreseeability, and that as a result, post-self-deception judgments are not reliable because they do not accurately track previous self-deceptive experiences. [ABSTRACT FROM AUTHOR]