Diagnosis of mental disorders - Reliability and Validity

Question 1

Brown et al (96)

Answer 1

67% agreement rate for major depression, which is classed as good reliability.

Question 2

Zigler and Phillips (61)

Answer 2

found a 54% ti 84% agreement rate when looking at broad categories for disorders, and reliability has increased since then so, depending on the disorder, the reliability is fair to good.

Question 3

Davison and Neale (94)

Answer 3

Found a variable reliability rate for different disorders, with 92% for psycho-sexual disorders, but only 54% for somatoform disorders.

Question 4

Kendal (75)

Answer 4

Looked at specific disorders and the reliability rate fell to 32%-57%.

Question 5

Willemse, Van Ypreen and Rispens (2003)

Answer 5

Tested the reliability of ICD 10 for children’s disorders and found that unless the category was objective the reliability was poor.

Question 6

Nicholls et al (00)

Answer 6

compared the reliability of DSM IV, ICD 10 and Great Ormand’s Street classification system for children with eating disorders. ICD had a reliability rate of 36%, DSM of 64%, but only because 50% of the raters agreed they couldn’t make a diagnosis. The Great Ormond Street system had 88% agreement.

Question 7

Andrews (99)

Answer 7

Looked at how much DSM IV agreed with ICD 10. Good agreement on disorders such as depression, general anxiety disorders and substance abuse, moderate agreement on other anxiety disorders and poor agreement on post-traumatic stress disorder.

Question 8

Cleusa et al (90)

Answer 8

Compared DSM IV and the Portuguese classification system for dependence disorders and found good agreement for measuring the severity of dependence on cocaine, cannabis and alcohol.