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What is Olbers's paradox and how is it resolved?
Experimental Group
In scientific research, the group of subjects who receive the treatment or intervention being tested, as opposed to a control group.
Control Group
In experimental research, a group of subjects that does not receive the experimental treatment and is compared to the group that does, to measure the effect of the treatment.
Reversal Design
A method in experimental analysis where an intervention is introduced, removed, and then reintroduced to determine its effect on behavior.
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