“…Overall, these studies have shown that schizophrenia patients are not psychotic for most of the time of their illness course, and instead are often able to perceive, communicate and cope with a broad range of subjective disturbances and deficits of thought, perception, mood, emotional resonance, vital drive, language, psychomotor activity, volition, and bodily sensations which represent their fundamental psychopathological vulnerability susceptible to transitions toward first-rank symptoms and other full-blown psychotic phenomena. The application of instruments like the SPQ-B is far less complex to grasp by the individual than an interview with the Bonn Scale for the Assessment of Basic Symptoms (BSABS) (Gross et al, 1987) or the EASE (Examination of Anomalous Self-experience) (Freedman and Chapman, 1973;Parnas et al, 2005) which are usually successfully administered in schizophrenia patients even over several years of follow up of their illness course. Therefore, schizophrenia patients are also expected to provide highly reliable and insightful self-reports of SPD features as assessed with the SPQ-B.…”