Jeanette is studying the association between middle-aged adults' education level and the education level of their parents.She has access to some genetic information about both generations,and decides to control for how shared genetics might explain the relationship between the education levels of middle-aged adults and their parents.In a separate study,Bowden is analyzing whether economic resources predict elementary school students' grades indirectly through the nutritional quality of students' diets.In these two studies,shared genetics
A)and nutrition are both possible confounding variables.
B)and nutrition are both possible mediators.
C)is a possible confounding variable and nutrition is a possible mediator.
D)is a possible mediator and nutrition is a possible confounding variable.

Question

Quizplus · Accepted Answer

In the first study, shared genetics could be a confounding variable because education level may be influenced by both genetics and parental education level. In the second study, nutrition could be a mediator because it could explain how economic resources affect students' grades. Both studies do not suggest that genetics and nutrition are both possible mediators or that nutrition is a possible confounding variable. Therefore, the best choice is (C) shared genetics is a possible confounding variable and nutrition is a possible mediator.

Jeanette Is Studying the Association Between Middle-Aged Adults' Education Level