In his research, Dr. Caulfield wants to compare levels of test anxiety among high school students in

grades 10 and 12. His hypothesis is that seniors will have higher levels of test anxiety than sophomores will.

His _______ definition of test anxiety for each person in his sample will be a self

-reported test-

anxiety

level, marked in a questionnaire as "high," "moderate," or "low."

A.

theoretical

B.

subjective

C.

functional

D.

operational