Biological, life course, and cross-cultural studies all point toward the value of dimensional and developmental ratings in the classification of psychosis.

@article{Dutta2007BiologicalLC,
  title={Biological, life course, and cross-cultural studies all point toward the value of dimensional and developmental ratings in the classification of psychosis.},
  author={Rina Dutta and Talya Greene and Jean Addington and Kwame McKenzie and Michael Phillips and Robin MacGregor Murray},
  journal={Schizophrenia bulletin},
  year={2007},
  volume={33 4},
  pages={868-76}
}
The diagnostic criteria for schizophrenia in the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) are based on the premise that it is a discrete illness entity, in particular, distinct from the affective psychoses. This assumption has persisted for more than a century, even though patients with a diagnosis of schizophrenia show a wide diversity of symptoms and outcomes, and no biological or psychological feature has been found to be pathognomonic of the… CONTINUE READING

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