McKenna designs a study in which she has two control and two experimental groups.In her design,one control group receives a pretest while the other does not,and one experimental group receives a pretest while the other does not.McKenna's design is an example of a _____ design.
A) four-group pretest-posttest
B) Solomon four-group
C) two-group control
D) one-group control-one-group experimental

Question

Quizplus · Accepted Answer

McKenna's design is an example of a Solomon four-group design, which includes two control and two experimental groups, with one control and one experimental group receiving a pretest, and the other control and experimental group not receiving a pretest. This design is used to control for the interaction between the pretest and the experimental treatment.

McKenna Designs a Study in Which She Has Two Control