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.
Answer: d.
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A reliable test
A. measures what it was designed to measure. B. measures what it measures consistently. C. has good validity. D. measures many different concepts at once.
One of the advantages of the correlational method is that
a. greater control is possible over the phenomenon in question. b. cause-and-effect relationships can be confirmed. c. it allows prediction. d. it can only be used in the laboratory.