If you had to briefly summarize the results of research on diagnostic reliability of mental disorders, which of the following sentences would do the job?
a. The reliability has increased with few exceptions.
b. We should not accept the assumption that the diagnostic categories in DSM-5 are used reliably.
c. The highest reliability is found for the specific examples of each of the major categories.
d. There is good reliability for personality disorders but lower reliability for other disorders.
Question 2
A team of researchers has developed a structured interview to diagnose a new type of personality disorder. A series of trials to check the reliability of the structured interview yields a kappa of .75. How should the researchers view this result?
a. The kappa is so low they decide to abandon the project.
b. The kappa is not at an acceptable level but encouraging for a new instrument that can be improved.
c. Kappa is not the appropriate measure to be used when evaluating the reliability of a new diagnostic category.
d. The kappa is at an acceptable level for well-established diagnostic instruments, so the interview is ready to be used in clinical settings.
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