A(n) ________ refers to an experiment that attempts to hold conditions (other than the intentionally introduced experimental intervention) constant.

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A controlled experiment is designed to hold conditions other than the experimental intervention constant to isolate the effect of the intervention. External validity refers to the extent to which the findings can be generalized to other populations or settings, while internal validity refers to the degree to which the study design eliminates alternative explanations for the observed results. Research design refers to the overall plan for conducting a study, while pure research design is not a commonly used term in research methods.

A(n) ________ Refers to an Experiment That Attempts to Hold