Researchers want to see of increasing blood sugar will improve memory function in senior citizens. To test this, they give a group of elderly people lemonade made with either sugar or a non-caloric sweetener followed by a memory test. In this study, what is the dependent variable?
a. scores on the memory test
b. the people given the lemonade made with sugar
c. the presence of sugar in the lemonade
d. the age of the participants
Answer: A. Scores on the memory test