AbstractSelf-deception has been studied by philosophers and psychologists for some time. Frenkel-Brunswik (1939) published the first psychology paper. In Triandis (2009 p. ix) there are references to 24 papers by philosophers and psychologists that examined this concept. All humans have self-deceptions, some more frequently than others. That is, they see the world the way they would like to be rather than the way it is. As I thought about the concept over the years I believe that the most important point for understanding self-deception is to examine what percentage of the information that humans use when constructing (Taylor, 1998b) the way they see the world comes from inside their body or from outside their body. If most of it comes from...