Internal validity is a characteristic of which type of study?
A) observational studies
B) correlations
C) experiments
D) interviews

Question

Quizplus · Accepted Answer

Internal validity refers to the extent to which a study can demonstrate a cause-and-effect relationship between variables, which is a hallmark of experimental research. In experiments, researchers manipulate one variable (the independent variable) and observe the effect on another variable (the dependent variable), while controlling for other potential confounding variables. This control allows for stronger claims of causality, hence higher internal validity, compared to observational studies, correlations, and interviews, where such manipulation and control are not possible.

Internal Validity Is a Characteristic of Which Type of Study