When diagnostic criteria change, old research problematic.

From a U.S. clinical psychologist:

"When diagnostic criteria change, the old research is problematic. It may be possible to obtain the raw data from past research and re-analyze it using the new criteria. Otherwise, the research on schizophrenia may include people who no longer qualify as schizophrenic." 

July 2014

Immediately related elementsHow this works
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ISPS-US Moving Forward Map »ISPS-US Moving Forward Map
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Moving Forward »Moving Forward
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What to do about language? »What to do about language?
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New language »New language
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"Schizophrenia" »"Schizophrenia"
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Implication of changes in definition of "schizophrenia" »Implication of changes in definition of "schizophrenia"
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When diagnostic criteria change, old research problematic.
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2. What about people labeled under old criteria? »2. What about people labeled under old criteria?
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1. Can you use old research? »1. Can you use old research?
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When definitions change, experiment must be repeated. »When definitions change, experiment must be repeated.
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