To avoid bias and confounds in a controlled experiment,participants should be assigned to either the experimental or control group ____.

Question

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Random assignment helps minimize bias by ensuring that each participant has an equal chance of being placed in either the experimental or control group, which helps control for potential confounding variables. Assigning participants on the basis of careful thought or individual tests may introduce bias, while assigning based on age variables may not be effective in controlling for all relevant variables.

To Avoid Bias and Confounds in a Controlled Experiment,participants Should