VALIDITY is whether you are measuring what you are trying to measure or whether your results are true or not. 2 issues in the validity of diagnosing schizo
1) DOES SCHIZO EXIST? Not questioning symptoms but questioning schizo like does it exist and do all sufferers have same disorder?
2) IS DIAGNOSES ACCURATE? Validity in whether the Doc is right in their diagnosis, both may agree but maybe wrong.
FACTORS affecting validity in diagnosis of schizo
1) WIDE RANGE OF SYMPTOMS only need to display two to be diagnosed so two ppl ,may not have same symptoms at all but both be diagnosed with schizo. Is it fair to say they have same illness?
2) LACK OF PATHOGNOMIC SYMPTOMS/ SIMILARITIES WITH OTHER MENTAL ILLNESSES schizo don't have any pathognomic symptoms. All symptoms of schizo are also symptoms of other mental illnesses. LOWERS VALIDITY as a person may have another mental illness and be diagnosed with schizo. Important to get diagnosis right so person isn't given an unnecessary stigma
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