Abstract

After defining the concept of error as it applies to Roentgen semiotics, we present a typology of the sources of semiotic error in clinical practice. It is a typology based on clinical observation, with the Peircean Categories and the triadic structure of Roentgen signs as organizing principles. This is followed by a review of a general psychological typology of the sources of human error. We conclude with the demonstration of a Category preserving correspondence between psychologic and semiotic sources of error. Thus, independently derived and empirically based typologies of psychologic and semiotic error are shown to have the same categorical structure.