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A Researcher Is Investigating Whether Taking Vitamins Improves Concentration

Question 29

Multiple Choice

A researcher is investigating whether taking vitamins improves concentration. In his study, he randomly assigned eight?year?old boys to two groups: Vitamin Group and No Vitamin Group. This study is an example of


A) a correlational study.
B) between subject design.
C) wait?list control.
D) within subject design.

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