classification and diagnosis of SZ

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  • classification and diagnosis
    • Beck
      • inter-rater reliability
      • 154 patients
        • 54% reliability rate
    • Rosenhan
      • 8 pseudo patients
        • "thud", "Empty", "Hollow"
        • patients had to convince the staff they were sane.
        • 35/118 real patients could detect the pseudo patients
      • 12 psychiatric hospitals
        • observed staff, patients and ward
          • 8 pseudo patients
            • "thud", "Empty", "Hollow"
            • patients had to convince the staff they were sane.
            • 35/118 real patients could detect the pseudo patients
      • 193 new patients
        • 83 defined as psuedo
    • co-morbidity
      • sim et al
        • 142 hospitalised patients
          • 32% additional diagnosis
      • presence of two or more disorders at the same time
    • validity
      • internal validity
        • results caused by our planned IV  or something we didn't plan for?
      • content validity
        • do the results seem plausible
      • external validity
        • generalizable to the general population
        • ecological validity/  mundane realism
          • does it resemble real life
  • reliability
    • internal reliability
      • questionnaires and interviews consistent
    • external reliability
      • can we repeat the study on the same participants and still get the same results
    • observer reliability
      • does every observer consistently classify things the same way
    • classification and diagnosis
      • Beck
        • inter-rater reliability
        • 154 patients
          • 54% reliability rate
      • Rosenhan
        • 12 psychiatric hospitals
          • observed staff, patients and ward
          • 193 new patients
            • 83 defined as psuedo
        • co-morbidity
          • sim et al
            • 142 hospitalised patients
              • 32% additional diagnosis
          • presence of two or more disorders at the same time
        • validity
          • internal validity
            • results caused by our planned IV  or something we didn't plan for?
          • content validity
            • do the results seem plausible
          • external validity
            • generalizable to the general population
            • ecological validity/  mundane realism
              • does it resemble real life

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