Using a pretest-posttest design with switching replication design, non-equivalent comparison groups are administered a pretest of the dependent variable, then one group receives a treatment while a no...Using a pretest-posttest design with switching replication design, non-equivalent comparison groups are administered a pretest of the dependent variable, then one group receives a treatment while a nonequivalent comparison group does not receive a treatment, the dependent variable is assessed again, and then the treatment is added to the control group, and finally the dependent variable is assessed one last time.