You are conducting a study looking at the effects of caffeine on attention in 7-year-old children. In this study, you have three groups of children, all age 7, with each group consisting of equal numbers of boys and girls. Group 1 drinks 6 oz. of cola; Group 2 drinks 6 oz. of caffeine-free cola; Group 3 drinks 6 oz. of water. Thirty minutes after the children drink, you ask them to complete a 100-piece puzzle. You measure the amount of time it takes each child to do this task. In this study, the dependent variable is

Question

Quizplus · Accepted Answer

The dependent variable is the variable being measured and is affected by the independent variable(s). In this study, the independent variable is the type of drink (cola, caffeine-free cola, or water) and the dependent variable is the amount of time it takes each child to complete the puzzle. Therefore, the correct answer is B.

You Are Conducting a Study Looking at the Effects of Caffeine