We propose that typical schizophrenic delusions develop on the background of preexisting anomalies of self-experience. We argue that disorders of the Self represent the experiential core clinical phenomena of schizophrenia, as was already suggested by the founders of the concept of schizophrenia and elaborated in the phenomenological psychiatric tradition. The article provides detailed descriptions of the pre-psychotic or schizotypal anomalies of self-experience, often illustrated through clinical vignettes. We argue that delusional transformation in the evolution of schizophrenic psychosis reflects a global reorganization of consciousness and existential reorientation, both of which radiate from a fundamental alteration of the Self. We critically address the contemporary cognitive approaches to delusion formation, often finding them inconsistent with the clinical features of schizophrenia or implausible from a phenomenological point of view.

Key words: self-awareness, subjective experience, preschizophrenic prodrome, phenomenology, psychosis, cognitivism.

This paper outlines several of the challenges that are inherent in any attempt to communicate subjective experience to others, particularly in the context of a clinical interview. It presents the phenomenological interview as a way of effectively responding to these challenges, which may be especially important when attempting to understand the profound experiential transformations that take place in schizophrenia. Features of language experience in schizophrenia – including changes in interpersonal orientation, a sense of the arbitrariness of language, and a desire for faithful communication of experience (including of ineffable transformations of experience) – are described, together with discussion of their relevance for the interview context. Furthermore, the interview presents a unique context in which both intersubjective and interpersonal aspects of experience will be described as well as evoked. It is proposed that phenomenological interviewers should not only be familiar with these and other experiences that can occur in schizophrenia, but also capable of applying the techniques of phenomenological and hermeneutic methods in order to understand the descriptions of interviewees with sensitivity and accuracy.

Key words: phenomenological psychopathology, clinical interview, schizophrenia. psychosis, language