reliability and validity in classification

Question 1

weakness: symptom overlap

Answer 1

two or more conditions share similar symptoms, SZ and DEP both have avolition, questions R and V as may be diagnosed with wrong disorder, may be diagnosing wrong, won’t receive appropriate treatment, negatively affects accuracy and consistency

Question 2

weakness: co-morbidity

Answer 2

two illnesses occur at same time, BUCKLEY ET ALL 50% SZ patients also have depression, 23% have both SZ and OCD, not diagnosing correctly so not treating appropriately, negatively affects accuracy and consistency

Question 3

weakness: gender bias

Answer 3

1980’s men diagnosed with SZ more often than women, men more genetically vulnerable, females function better (work , relationships) symptoms may be masked, women who share symptoms may not be diagnosed as symptoms seem mild

Question 4

weakness: culture bias

Answer 4

english people of african origin more likely to be diagnosed, voices from ancestors seen as positive symptom in UK, ten times more likely to revive diagnosis if living in UK compared to white brits, persons culture impacting diagnosis