How does an experimenter try to equate the experimental group and the control group at the start of the experiment?

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Quizplus · Accepted Answer

Random assignment is the most commonly used method to equate the experimental group and the control group at the start of the experiment. It ensures that each participant has an equal chance of being assigned to either the experimental or the control group, reducing any potential biases or confounding variables. Elimination of independent variables and statistical tests can be used to control for differences between the groups during the experiment, but they do not necessarily equate the groups at the start. Demand characteristics are a potential source of bias that can affect both groups equally and are not a method of equating the groups.

How Does an Experimenter Try to Equate the Experimental Group