A03: RELIABILITY AND VALIDITY IN DIAGNOSIS AND CLASSIFICATION OF SCHIZOPHRENIA

Question 1

Whats limitation of schizophrenia diagnosis in temrs of test retest reliabilty

Answer 1

Not reliable

Schizophrenia diangosis concordance rates is 37% not 100
American psychiatrists and British psychologists were to diagnose patients based on the same case description 69% of the psychologists diagnosed with schizophrenia but only 2% of the British psychiatrists did that

clinicians where unable to make the same diagnosis on separate occasions using the same information - there is no test retest reliability

Question 2

what is a strength of schizophrenia diagnosis in terms of it being repeatable

Answer 2

the ICD-10 system produces repeatable diagnosis

Jakobsen tested reliability of ICD-10. 100 daniesh patients tested with 98% concordance rate

this shows that there is high reliability