As Wikipedia has become an indispensable source of online
information, concerns about who writes, edits, and main-
tains it have come to the forefront. In particular, the 2010
UNU-MERIT survey found evidence of a signi cant gender
skew: fewer than 13% of Wikipedia contributors are women.
However, the number of contributors is just one way to ex-
amine gender di erences in contribution. In this paper we
take a more ne-grained perspective by examining how much
and what types of Wiki-work men and women tend to do.
First, we nd that the so-called \Gender Gap" in number of
editors may not be as wide as prior studies have suggested.
Second, although more than 80% of editors in our sample
were men, among the bottom 75% of editors by activity-
level, we nd that men and women made similar numbers
of revisions. However, among the most active Wikipedians
men tended to make many more revisions than women. Fi-
nally, we nd that the most active women in our sample
tended to make larger revisions than the most active men.
We conclude by discussing directions for future research.
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