A Researcher Was Interested in Assessing Whether a New Medication

Multiple Choice

A researcher was interested in assessing whether a new medication had negative side effects on reaction time.He performed an experiment on a group of rats.One group of rats received the medication, and the other group of rats did not.The researcher then measured reaction time differences between the two groups on a series of tasks.In this experiment, the independent variable is:

A) reaction time.
B) tasks.
C) rats.
D) medication.