To Determine If Sugar-Rich Diets Affect Hyperactivity in Kids, a Researcher

Essay

To determine if sugar-rich diets affect hyperactivity in kids, a researcher prepared two daily menus that children would receive for a 30-day period. A high-sugar diet was given to the boys, while the girls had a menu that seemed identical but was not a high sugar diet. At the end of 30 days, the boys and girls were evaluated to determine their levels of hyperactivity. In the study, the high-sugar diet is the _______.
a. placebo
b. independent variable
c. dependent variable
d. control group