Question: Im being asked to provide examples of both a posttest-only design and a pretest-posttest design. For each design, discuss the major threats to validity and

Im being asked to provide examples of both a posttest-only design and a pretest-posttest design. For each design, discuss the major threats to validity and the limits on the conclusions that can be drawn.

Discuss the importance of random assignment, and the advantages and disadvantages of using independent group designs over repeated measure designs

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