To attribute causality of a posttest measure in an experimental study,the independent variable will be
A) administered to control group subjects only.
B) administered to subjects selected by the researcher.
C) administered to treatment group subjects.
D) defined loosely to avoid bias.

Question

Quizplus · Accepted Answer

To improve determinations of causality,the independent variable should be administered consistently to all subjects in the treatment group.The independent variable is administered to the treatment group and not the control group.Selection of subjects by the researcher increases the likelihood of bias.The independent variable should be precisely defined.

To Attribute Causality of a Posttest Measure in an Experimental