For a variety of historical and scientific reasons, representational world phenomena have tended to be conceptualized either apart from structural theory, as special psychologies of early phenomena; or so embedded within the structural theory that the details of the various elements do not stand out in sharp relief. Utilizing the concepts of ego state and the situations of danger, the author attempts to include representational world concepts within structural theory in a way applicable to all levels of development and psychopathology. The implications of this integration for the analytic process are explored, especially for psychopathology which involves significant preoedipal fixation.