Dante is investigating whether smoking affects mental clarity. Which of the following participants would be an appropriate matched-pair for an individual who is a regular smoker?
A) someone who has never smoked
B) someone who socially smokes about once a month
C) someone who smokes daily
D) someone who recently quit smoking

Question

Quizplus · Accepted Answer

In a matched-pair design, participants are paired based on similar characteristics except for the one under investigation. Since the individual in question is a regular smoker, the most appropriate match would be someone who also smokes daily (C), ensuring that the primary difference between the pairs is not the frequency or habit of smoking but potentially other factors influencing mental clarity.

Dante Is Investigating Whether Smoking Affects Mental Clarity