Internal validity is increased by the absence of
A)randomization.
B)treatment variance.
C)confounding.
D)control.

Question

Quizplus · Accepted Answer

Internal validity refers to the degree to which a study can establish a cause-and-effect relationship between the treatment and the outcome. The absence of confounding variables, which are external influences that could affect the outcome, increases the internal validity of a study by ensuring that any observed effects are due to the treatment itself and not to these external factors.

Internal Validity Is Increased by the Absence of