MCAT Practice · Reasoning about the Design & Execution of Research
MCAT Question: A research study aims to investigate the effects of long-term…
hard
A research study aims to investigate the effects of long-term space travel on cognitive function. The researchers plan to recruit astronauts who have spent at least six months on the International Space Station (ISS) and compare their cognitive abilities to a control group of individuals who have never been to space. Which of the following potential sources of bias should the researchers be most concerned about when designing this study?
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