Basic self-disorders in adolescence predict schizophrenia spectrum disorders in young adulthood: A 7-year follow-up study among non-psychotic help-seeking adolescents.

Background And Goals: Recent studies indicate that basic self-disorder (SD) is a core clinical phenotype of schizophrenia and its spectrum. The goal of the present study was to test the degree to which SD characterizes the pre-onset phase of schizophrenia-spectrum disorders (SSD). A secondary goal was to replicate previous findings regarding the long-term stability of SD.