If the researcher can show that the experimental or treatment variable actually produced the differences observed in the dependent variable,then the experiment can be said to be which of the following?
A)internally valid
B)extraneously valid
C)externally valid
D)laboratory valid
E)none of these

Question

Quizplus · Accepted Answer

Internal validity refers to the degree to which a researcher can confidently attribute cause-and-effect relationships between the independent and dependent variables in a study. If the researcher can conclusively show that the experimental or treatment variable produced the differences observed in the dependent variable, then the experiment is considered to be internally valid.

If the Researcher Can Show That the Experimental or Treatment