Pick a smart roommate.
One study of Dartmouth College students by economist Bruce Sacerdote illustrates how powerful this influence is. He found that when students with low grade-point averages simply began rooming with higher-scoring students, their grade-point averages increased. These students, according to the researchers, “appeared to infect each other with good and bad study habits—such that a roommate with a high grade-point average would drag upward the G.P.A. of his lower-scoring roommate.”
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