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How might a researcher balance practice effects in the following example?

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How might a researcher balance practice effects in the following example? A researcher is interested in whether a particular reading curriculum is effective in improving reading skills in a population of 6th graders. The researcher wants to compare this specific curriculum that they developed to another popular curriculum developed by a competing researcher. He/she plans on giving the curriculum to the group of 6th graders over a 6 week period (to be administered once a day for 2 hours each). How might the researcher go about balancing practice effects in this hypothetical situation?

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This solution provides an explanation of how to balance the practice effects in a hypothetical study.

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Practice effects can occur when we have a repeated-measures design, where participants are measured multiple times and their performance improves due to practice on the task. In this case, the task is reading, and the students are going to get practice reading over the 6 weeks of the study, both due to the reading program and to their regular ...

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