A multimethod validation of the Inpatient Multidimensional Psychiatric Scale with chronically institutionalized patients.

@article{Mariotto1974AMV,
  title={A multimethod validation of the Inpatient Multidimensional Psychiatric Scale with chronically institutionalized patients.},
  author={Marco J. Mariotto and Gordon L. Paul},
  journal={Journal of Consulting and Clinical Psychology},
  year={1974},
  volume={42},
  pages={497-508}
}
The convergent and discriminant validity of the Inpatient Multidimensional Psychiatric Scale (IMPS) for chronically institutionalized patients was assessed over three modes of assessment (interview ratings, ward ratings, and observed frequency of behavior), two settings (interview and ward), and two points in time. Sequential performance of raw-score intercorrelations, principal-components analyses, and multimethod factor analysis indicated that the IMPS possessed excellent concurrent validity… 

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