Dr. Thigpen continued to use his original scale to measure his patients' weights even though it no longer gave an accurate reading. Despite its inaccuracy, the scale did consistently give the same wrong weight each time a patient stepped on it. In this case, his scale lacks:
A) sensitivity.
B) reliability.
C) validity.
D) sensitivity, reliability, and validity.

Question

Quizplus · Accepted Answer

The scale lacks validity because it does not accurately measure what it is supposed to measure, which is the true weight of the patients. Despite being consistent (reliable) in its measurements, its inability to provide accurate readings means it is not valid.

Dr Thigpen Continued to Use His Original Scale to Measure