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ISSUE AO1 AO2


Reliability Reliability= consistency of diagnosis between different psychiatrists (inter-rater reliability)
Beck (1962) reported 54% concordance rate between practitioners in 153 patients using Rosenham- warned psychiatric hospitals that a
the DSM. number of pseudo patients would try to be admitted.
Test-retest= diagnosing a patient more than once to…

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Poor predictive Predictive Validity= extent to which the outcome of a Sz patient can be predicted women have been found to have a better
validity Around 20% recover to their previous level of functioning- 10% with lasting improvement outcome than men
Around 30% show improvement with relapse According to Amador…

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