Question

Are these statements true or false about the performing of a drug trial?

1. The control group does not get the test drug.

2. The scientists only change one variable at a time (such as dosage).

Answer 1

Both True.

Explanation:

7 - True - The control group is the group that does not have the procedure or trial performed upon them. In a drug trial, they would receive a placebo (ex. a sugar pill).

8 - True - When performing an experiment, such as with a drug trial, we want to know what the results are of making a change in one parameter. If, for instance, we increase the dose of the experimental drug and also change the time of day it is taken, is the change(s) experienced by the test group related to the change in dose or the change in time taken? And so we only change one parameter at a time.