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Question
PJ conducts an experimental study on the effects of soft music during high stakes science testing. He randomly assigns students at the school. In one condition he does not provide music for testing while in the other group he does provide the music. He administers a pretest at the beginning of the year and a posttest at the end of the year. One concern in his study is that during the year the music teacher at the school he administered the study shared with students the physiological benefits of soft music.PJ's design is best represented by which of the following?
a. Static-group comparison
b. Pretest-posttest control group design
c. One-shot case study
d. One-group pretest-posttest design
Answer
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