Determine a positive impact on development of coordination

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Reference no: EM133260248

Assignment:

A researcher is investigating the impact of yoga on the physical coordination skills of young children. He takes a large sample (280 five-year-old children). He has their physical education (PE) teacher conduct a 15-minute yoga session before each PE class. The researcher returns after two years to assess their coordination skills. The physical coordination skills in children have indeed improved. The researcher determines that yoga has a positive impact on the development of coordination. What type of threat to validity is present in this study? How could the researcher improve the study to reduce this threat?

Reference no: EM133260248

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