A researcher conceptualizes pain as "the subject's statement of intensity of pain." What operational definition is consistent with this conceptualization?
A) Measurement of subject's pulse and blood pressure
B) Nurse's observation of subject's pain behavior
C) Subject's score on self-reported pain rating scale
D) Frequency of subject's use of pain medication
C
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An operational definition indicates what the researchers specifically must do to measure the concept and collect needed information. This conceptualization could be measured by the subject's score on self-reported pain rating scale.
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