The effects of 'internal audience' and 'shared reality' (Higgins 2000) seem to indicate dialogical nature of cognition and a modular structure of the mind, which can be fully described by discursive conceptions, including the Dialogical Self theory (Hermans 1999). However, much as these conceptions are theoretically very interesting they have rarely been experimentally tested. The article describes an empirical attempt to verify one of the basic thesis of the Dialogical Self theory, according to which each subject position creates its own subject I being the hero of a specific self-narrative. The experiment using a simplified Baldwin and Holmes (1987) procedure showed that life stories created from different subject positions differed indeed in a range of content and formal characteristics, which is in agreement with the Dialogical Self theory. Given the results one may also evaluate various methods of positioning as experimental procedures which differ in their effectiveness.