A planned quasi-experimental study using a nonequivalent control group design has several extraneous variables that threaten its internal validity.The nurse researcher's actions should be based on which understanding?

Question

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Quasi-experimental studies have a higher risk of extraneous variables that can threaten the internal validity of the study. Therefore, the researcher should take steps to control these intervening variables to strengthen the study's validity. option A is not necessarily true; statistical significance depends on the effect size and sample size. Option B assumes that random assignment would ensure that the groups are equivalent in all important ways, which is not guaranteed. Option D is incorrect because even observational studies should aim to establish causality if possible.

A Planned Quasi-Experimental Study Using a Nonequivalent Control Group Design