Asked by Krista Schmidt on May 10, 2024
Verified
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
Fluoride Mouthwash
An oral rinse product containing fluoride, intended to reduce dental cavities by strengthening tooth enamel.
Matched Pairs Design
An experimental design where each subject is paired up with another subject with similar characteristics, and one subject from each pair is assigned to the treatment group and the other to the control group.
Cavities
Holes or structural damage formed in teeth due to decay, often caused by bacteria, sugary diets, and poor dental hygiene.
- Understand how the operational definition of variables (e.g., treatments, levels, factors) impacts study design and outcomes.
Verified Answer
Learning Objectives
- Understand how the operational definition of variables (e.g., treatments, levels, factors) impacts study design and outcomes.
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