Are Negative Symptoms Dimensional or Categorical? Detection and Validation of Deficit Schizophrenia With Taxometric and Latent Variable Mixture Models.

@article{Ahmed2015AreNS,
  title={Are Negative Symptoms Dimensional or Categorical? Detection and Validation of Deficit Schizophrenia With Taxometric and Latent Variable Mixture Models.},
  author={Anthony Olufemi Ahmed and Gregory P. Strauss and Robert W. Buchanan and Brian Kirkpatrick and William T. Carpenter},
  journal={Schizophrenia bulletin},
  year={2015},
  volume={41 4},
  pages={879-91}
}
Studies have supported the validity of the deficit form of schizophrenia (ie, people with primary and enduring negative symptoms). A test of whether that group is a true taxon-that is, a distinct, discontinuous group-has yet to be conducted and the underlying structure of negative symptoms as categorical or dimensional remains undetermined. The present study examined the latent structure of negative and deficit symptoms to determine if a nonarbitrary boundary distinguishes deficit from… CONTINUE READING
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