A confounding variable poses little threat to internal validity if:
A) its effect on the dependent or criterion variable is known to be small.
B) the experimenter knows that the confounding variable exists.
C) its effect on the dependent or criterion variable cannot be determined.
D) the experimenter believes that its effect on the dependent or criterion variable is small.

Question

Quizplus · Accepted Answer

If the effect of a confounding variable on the dependent variable is known to be small, it poses little threat to internal validity because it is unlikely to significantly influence the results of the study.

A Confounding Variable Poses Little Threat to Internal Validity If