Asked by adrina

why is it wrong for a researcher to assign the first subjects to show up for an experiment group and the second group of subjects to arrive to the control group?

Answers

Answered by Ms. Sue
The two groups are different. Besides, the subjects may realize then that one is the control group and the other is the experimental group.

Answered by PsyDAG
There is a confounding variable introduced in terms of promptness of arrival, which may influence the dependent variable, whatever that is.
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