Positive vs. negative schizophrenia: a critical evaluation.

@article{Andreasen1985PositiveVN,
  title={Positive vs. negative schizophrenia: a critical evaluation.},
  author={Nancy C. Andreasen},
  journal={Schizophrenia bulletin},
  year={1985},
  volume={11 3},
  pages={
          380-9
        }
}
Discussion of the positive vs. negative distinction often fails to address whether this distinction refers to symptoms, syndromes, or diseases. Symptoms and syndromes are etiologically nonspecific, while diseases have a specific identifiable pathophysiology or etiology. The positive vs. negative distinction is sometimes discussed as a hypothesis for identifying discrete subtypes of disease within the schizophrenic syndrome. In this overview, the evidence supporting this approach to subtyping is… CONTINUE READING

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