Researchers control factors that might influence a dependent variable by means of

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Random assignment helps to distribute extraneous variables evenly among groups, making it easier to attribute changes in the dependent variable to the independent variable being studied. Replication is important for ensuring the reliability of findings, but it does not control for extraneous variables. Naturalistic observation involves simply observing behavior in its natural setting and does not involve manipulating variables. Operational definitions help to specify and standardize the measures used in a study, but they do not directly control for extraneous variables.

Researchers Control Factors That Might Influence a Dependent Variable by Means