Schizophrenia Bulletin explores “the extended psychosis phenotype,” finding that affective dysregulation, psychotic experiences, motivational impairments, and cognitive alterations are distributed throughout the population, and suggestive of a continuum of vulnerability for psychosis more than a categorical phenotype. In assessing rates of psychosis in the population, however, methods of data collection account for more variance than any other factor. The high rate of self-reported psychosis, they say, may represent a continuum of the “psychosis phenotype” in the general population that is not in need of clinical care.
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