To study some effects of alcohol consumption,Dr.Chu tested the physical coordination skills of 21-year-old men who had just drunk either 4,2,or 0 ounces of alcohol.In this study,the independent variable consisted of
A) the age of the research participants.
B) the physical coordination skills of the research participants.
C) the amount of alcohol consumed.
D) the effects of alcohol consumption.

Question

Quizplus · Accepted Answer

The independent variable is the factor being manipulated in the experiment, which is the amount of alcohol consumed - either 4, 2, or 0 ounces. The age and physical coordination skills of the participants are not being manipulated and thus are not the independent variable. The effects of alcohol consumption may be a dependent variable or an outcome of the study but they are not the independent variable.

To Study Some Effects of Alcohol Consumption,Dr