In an experiment, internal validity means:
A) showing that changes in your independent variable caused observed changes in your dependent variable.
B) that most extraneous variables have been identified and controlled.
C) showing that changes in your criterion variable relate only to changes in your predictor variable.
D) None of the answers is correct.

Question

Quizplus · Accepted Answer

Internal validity refers to the extent to which a study can demonstrate that the independent variable is responsible for changes in the dependent variable, ruling out alternative explanations.

In an Experiment, Internal Validity Means