Dr.Martinez is doing a research study examining the effects of a new headache medication on migraine pain.He decides to divide his participants up into four subject groups,each one of which will receive a different amount of medication to take when they have a migraine.He will ask them to write down their assessment of how much the pain has dropped on a ten-point scale an hour after taking the medication.What is the dependent variable in this study?
A) The intensity of the migraine each participant has before taking the medication.
B) The level of pain reduction reported by each participant.
C) The amount of medication each participant takes.
D) The number of people who are assigned to each of the subject groups.

Question

Quizplus · Accepted Answer

The dependent variable is the variable that is being measured in the study, which is the level of pain reduction reported by each participant. The independent variable is the amount of medication each participant takes, which is being manipulated by dividing the participants into four groups receiving different amounts of medication. The intensity of the migraine each participant has before taking the medication is a potential confounding variable, meaning it could affect the outcome of the study, but it is not the dependent variable being measured. The number of people assigned to each of the subject groups is also not the dependent variable being measured but instead is a factor in the experimental design.

DrMartinez Is Doing a Research Study Examining the Effects of a New