Positive and negative syndromes in schizophrenia as a function of chronicity.

@article{Kay1986PositiveAN,
  title={Positive and negative syndromes in schizophrenia as a function of chronicity.},
  author={Stanley R. Kay and Ariel Fiszbein and Jean Pierre Lindenmayer and Lewis A. Opler},
  journal={Acta psychiatrica Scandinavica},
  year={1986},
  volume={74 5},
  pages={507-18}
}
The construct validity and extended stability of positive and negative syndromes were studied via multidimensional cross-sectional assessment of 134 schizophrenics in the acute, chronic, and long-term chronic stages. For all groups the syndromes were internally reliable, not significantly intercorrelated, and of similar severity. The syndromal correlates… CONTINUE READING