If you find that two groups differ from each other on the dependent measure at the end of an experiment, you are able to conclude that:
A) only one thing could have caused the difference: manipulation of the dependent variable.
B) the groups differed on the dependent measure before the study started.
C) only one thing could have caused the difference: manipulation of the independent variable.
D) none of the above

Question

Quizplus · Accepted Answer

The correct answer is C because in experimental research, the independent variable is manipulated by the researcher to observe its effect on the dependent variable. If two groups differ on the dependent measure at the end of an experiment, it suggests that the manipulation of the independent variable could be the cause of the difference observed.

If You Find That Two Groups Differ from Each Other