If an experiment is internally valid,then one can infer that:
A)manipulating the independent variable caused the changes in the dependent variable.
B)the independent and dependent variables were correlated but not necessarily causally related.
C)the variables were defined optimally in terms of validity.
D)the same results would be obtained if we replicated the experiment in a different population.

Question

Quizplus · Accepted Answer

Internal validity refers to the extent to which an experiment demonstrates a cause-and-effect relationship between the independent and dependent variables. If an experiment is internally valid, it is reasonable to infer that manipulation of the independent variable caused the changes in the dependent variable.

If an Experiment Is Internally Valid,then One Can Infer That