Multiple Choice
Dr. Feng devises a questionnaire to measure adults' extraversion, a stable personality trait. Dr. Feng computes the questionnaire scores of a large sample of adults. Six months later, he gives the same sample the same test. The correlation between the two sets of scores is .10. What can one conclude regarding Dr. Feng's test?
A) It is not reliable.
B) It is reasonably reliable.
C) It is not valid.
D) It is reasonably valid.
Correct Answer:

Verified
Correct Answer:
Verified
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