When talking about a scientific expreiment does control and contolled mean the same thing?

Question

I have to answer a question and both control and controlled are in my choices. Also in my choice is the answer both control and contolled. The question ask if a patient receives a placebo drug, what kind of experiment is that? control, controlled, treatment, manupilated, or both control and controlled. thanks

Answer 1

A control is something not affected by the experiment to see what is normal.
So if a placebo is involved that would constitute a control. Nothing is being changed, but the recipient does not know that. Other recipients receive the treatment and then the experimenter compares the two to see what difference the treatment does.

Answer 2

I think the answer is controlled.

Example:
In an experiment to test whether drug X helps smokers quit you could give half of the subjects drug and half placebo. The patients that recieved placibo are controls and the experiment is a controlled experiment.

In some cases it may be unethical to include a control group. For example, if a drug has been shown to be efficacious after stroke and you are testing for the most effective dose then you would not have a negative control (i.e. placebo) group.

Answer 3

Control is the answer.

EDIT***: After reading the next answer with examples, I am not so sure of my answer. The answer rests on the question’s semantics. We seem to be playing in word forms control should be used as a noun and controlled the verb.