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Social Studies, 10.10.2019 00:20 santana647

Dr. mientka designs an experiment. he randomly assigns his participants to 2 groups, pretests them on general intelligence, and then proceeds with his treatment (one group participates in a self-esteem-building program, and the other group participates in a resiliency/self-regulation-building program). these programs take 6 months to run. then he posttests the participants in each group with the same test that was his pretest. during the 6-month programs, 17 of his participants leave the study for a variety of reasons. this means that dr. mientka's results might be affected by:

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