Will a fluoride mouthwash used after brushing reduce cavities? Twenty sets of twins were used to investigate this question.One member of each set of twins used the mouthwash after each brushing,the other did not.After 6 months,the difference in the number of cavities of those using the mouthwash was compared with the number of cavities of those who did not use the mouthwash.This experiment uses _________.
A)random placebos
B)double blinding
C)double replication
D)a matched pairs design

Question

Quizplus · Accepted Answer

This experiment used a matched pairs design, where each set of twins serves as their own control group. One twin used the mouthwash while the other did not, allowing for a direct comparison within each set. Random placebos, double blinding, and double replication were not used in this experiment.

Will a Fluoride Mouthwash Used After Brushing Reduce Cavities? Twenty