Which of the following statements is true about the Solomon four-group design?
A. In this design, mortality effects are assessed in the posttest conditions.
B. In this design, half of the participants are given a pretest and the other half receive a posttest only.
C. The design is used in situations in which a pretest is undesirable.
D. The design allows a researcher to examine whether there is an interaction between an independent variable and a posttest.
Answer: B
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