Abstract

There has been no systematic study in the literature of how self-deception differs from other kinds of self-distortion. For example, the term ‘cognitive dissonance’ has been used in some cases as a rag-bag term for all kinds of self-distortion. To address this, a narrow definition is given: self-deception involves injecting a given set of facts with an erroneous fact to make anex antesuboptimal decision seem as if it wereex anteoptimal. Given this narrow definition, this paper delineates self-deception from deception as well as from other kinds of self-distortions such as delusion, moral licensing, cognitive dissonance, manipulation, and introspective illusion.