John is developing an operational definition to measure the military strength of different nations. He is concerned that his operational definition actually measures what it is intended to measure. John is concerned about the:
A) accuracy of his hypothesis.
B) extent his measure varies from one case to the next.
C) reliability of his measure.
D) inter-rater consistency of his measures.
E) validity of his operational definitions.

Question

Quizplus · Accepted Answer

John's concern about whether his operational definition actually measures what it is intended to measure directly relates to the concept of validity. Validity refers to the degree to which a tool or method measures what it claims to measure.

John Is Developing an Operational Definition to Measure the Military