In an experiment that studied the effects of a new drug on performance, all subjects in the experimental condition are tested on in the morning and those in the control condition are tested in the afternoon. the time of the day is a(.

Independent

Explanation:

An dependent variable is a variable that is being tested for in an experiment while the change in conditions of the experiment is an independent variable.

From the above question, the time of the day the drug is being given to the subjects is independent of the new drug. This is because the drug is what is being tested and as such is the dependent variable. That leaves time as the independent variable in the experiment as the result of its variation(morning and afternoon) of administration is recorded.

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