Clifton Had Been Experiencing a Number of Psychological Issues, So

Clifton had been experiencing a number of psychological issues, so he decided to go to a psychiatrist to see what was wrong. Dr. A told him he had major depressive disorder. He decided to seek a second opinion. Dr. B diagnosed him with generalized anxiety disorder. Wanting yet another opinion, he went to Dr. C, who told him he was obsessive-compulsive. This demonstrates poor

A) test-retest reliability.
B) concurrent validity.
C) descriptive validity.
D) inter-rater reliability.