Internal validity is a matter of degree; the level of internal validity that findings of a study have is influenced, in part, by the researcher's choice of method.For instance, _____________usually have high internal validity, _____________have moderate internal validity, and _____________tend to have low internal validity.

Question

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Laboratory experiments often have high internal validity because they allow for precise control over variables. Surveys can have moderate internal validity depending on how they are designed and implemented. Observational studies tend to have low internal validity due to the lack of control over variables, making it harder to establish cause-and-effect relationships.

Internal Validity Is a Matter of Degree; the Level of Internal