A researcher hypothesizes that immunizations containing traces of mercury do not cause autism in children. Which of the following data provides the strongest test of this hypothesis?
Question
A researcher hypothesizes that immunizations containing traces of mercury do not cause autism in children. Which of the following data provides the strongest test of this hypothesis?
Solution
The strongest test of this hypothesis would be a large-scale, longitudinal study that compares the rates of autism in children who have received immunizations containing traces of mercury with those who have not. The study should control for other potential factors that could influence the development of autism, such as genetics and environmental factors. The data should be collected over a long period of time to account for the possibility that autism symptoms may not appear immediately after immunization. The results of the study would provide strong evidence either supporting or refuting the researcher's hypothesis.
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