Reliability & Validity - diagnosis

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  • Reliability & Validity (Health Psych)
    • Validity
      • Criterion validity
        • When two or more manuals make a similar diagnosis
      • Concurrent validity
        • People with the same diagnosis should share some features not used in a diagnosis
          • Memory impairment in schizophrenics
      • Etiological validity
        • The same causes found in all people who have the same illness
      • Predictive validity
        • If a diagnosis is valid, you should be able to predict the prognosis
    • Reliability
      • Test re-test reliability
        • Get a diagnosis, test later, and get the same diagnosis
      • Inter-rater reliability
        • More than one clinician comes up with the same diagnosis on the same person


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