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Social Studies, 25.05.2021 17:20 ysabel0420

Dr. Jones is conducting research to determine if IQ changes with age. The research design includes three groups of participants. Group 1 consists of 10- year-olds, group 2 of 15-year-olds, and group 3 of 25-year olds. Dr. Jones gives an IQ test to all three groups to determine the average IQ of each group. The design of the research is

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