Miguel is using his scientific knowledge to examine events in his own life. He hypothesizes that mouthwash that "stings" does a better job preventing cavities than mouthwash that does not "sting." If he assigns 10 people to use the mouthwash that stings for 6 months and another 10 people to use the mouthwash that doesn't sting for 6 months, then he is conducting a:
A) between-subjects study.
B) nonexperimental study.
C) within-subjects study.
D) longitudinal study.

Question

Quizplus · Accepted Answer

Miguel is conducting a between-subjects study because he is comparing the outcomes of two different groups of people who are each experiencing a different condition (one group using stinging mouthwash and the other using non-stinging mouthwash).

Miguel Is Using His Scientific Knowledge to Examine Events in His