The question as to whether the independent variable was the sole cause of the change in the dependent variable is the basic issue in:
A)a repeated measures study
B)internal validity
C)a matching study
D)external validity

Question

Quizplus · Accepted Answer

Internal validity refers to the degree to which the independent variable is the only factor that could have caused changes in the dependent variable. Therefore, the question of whether the independent variable is the sole cause of the change in the dependent variable is the basic issue in internal validity. The other options do not directly address this issue.

The Question as to Whether the Independent Variable Was the Sole