Clinical Activity and Psychopathological Knowledge Are Related to Real-World Performance of Leading International Psychiatrists in Diagnosing Schizophrenia Spectrum Disorders

Abstract – Introduction: A recent empirical benchmark study designed to assess real-world diagnostic accuracy and reliability among 30 internationally renowned psychiatrists specializing in the schizophrenia spectrum found that only 33.3% of the psychiatrists correctly diagnosed two vignettes that included typical descriptions of disorders in the schizophrenia spectrum. The present study aimed to identify clinician-related factors that might account for this poor diagnostic performance, such as clinical versus research focus, years of clinical experience, and perceived usefulness of psychopathological concepts. Methods: The study employed secondary analyses of data collected in in-depth online interviews with a group of 30 top-tier international psychiatrists specializing in schizophrenia spectrum disorders (SSDs). Participants were asked to make their best clinical diagnostic estimate for two written clinical vignettes developed on the basis of real-world SSD cases. Results: We found that diagnostic accuracy was nearly significantly related to length of clinical experience, greater emphasis on practice versus research (estimated by low H-index), a proclivity to engage in psychotherapy, a nuanced view of psychosis as a spectrum concept, and acknowledgment of the relevance of self-disorders (i.e., subtle, enduring, nonpsychotic phenomenological anomalies of subjective experience) for SSD diagnosis. Conclusion: Taken together, these findings suggest that continuous clinical activity and nuanced knowledge of psychopathology that goes beyond the guidelines of DSM and ICD are crucial for accurate diagnostic performance in real-world diagnostic encounters.