This paper examines academic peer effects in college. Unique new data
from the Berea Panel Study allow the researchers to focus on a mechanism wherein a
student's peers affect her achievement by changing her study effort.
Although the potential relevance of this mechanism has been recognized,
data limitations have made it difficult to provide direct evidence about
its importance.
The researchers find that a student's freshman grade point average
is affected by the amount her peers studied in high school, suggesting
the importance of this mechanism. Using time diary information, they
confirm that college study time is actually being affected.
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