One of the advantages of using existing items or scales in research rather than developing new ones is:
A)existing scales usually achieve a higher level of measurement.
B)existing scales are more likely to be unidimensional.
C)existing scales are more likely to confirm research hypotheses.
D)the validity and reliability of existing scales have usually already been established.

Question

Quizplus · Accepted Answer

Existing scales have typically undergone rigorous testing and evaluation, which means their validity (accuracy in measuring what they are supposed to measure) and reliability (consistency of the measurement) have already been established. This saves researchers time and resources in having to validate new scales.

One of the Advantages of Using Existing Items or Scales