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Title: Why would a researcher need to be concerned about the administration of a pretest and posttest in a ... Post by: BallsDeep on Feb 3, 2018 Why would a researcher need to be concerned about the administration of a pretest and posttest in a research study?
a. It is a threat to external validity. b. It is a threat to internal validity. c. It is a form of selection bias. d. It is a form of maturation Title: Why would a researcher need to be concerned about the administration of a pretest and posttest in a ... Post by: mrperretti on Feb 3, 2018 Content hidden
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