Issues of validity and reliability

found an inter-rater reliability correlation of only 0.4 for psychiatrist’s differentiation between bizarre and non-bizarre behaviour delusions. S. This highlights the issue with validity of the diagnosis as it show
Mojabi And Nicholson
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compared the Dam criteria against core notes of patients diagnosed with schizophrenia and found that the diagnosis of schizophrenia had a high level of stability suggesting that the diagnosis was valid.
Hollis
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found that 64% of 134 US psychiatrists diagnosed schizophrenia to only 2% of 194 UK psychiatrist when given a description of a patient.
Copeland et al
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Harrison found that you are 7% more likely to be diagnosed as schizophrenia if you’re afro-Caribbean by US and UK psychiatrists.
Harrison
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compared the Dam criteria against core notes of patients diagnosed with schizophrenia and found that the diagnosis of schizophrenia had a high level of stability suggesting that the diagnosis was valid.

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Hollis

Card 3

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found that 64% of 134 US psychiatrists diagnosed schizophrenia to only 2% of 194 UK psychiatrist when given a description of a patient.

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Card 4

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Harrison found that you are 7% more likely to be diagnosed as schizophrenia if you’re afro-Caribbean by US and UK psychiatrists.

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Card 5

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