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How Do One's Peers on a Leaderboard Affect Oneself?
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How Do One's Peers on a Leaderboard Affect Oneself?
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Dissertation
How Do One's Peers on a Leaderboard Affect Oneself?
2018
Overview
Leaderboards are a workhorse within the gamification literature. While the effect of a leaderboard has been well studied, there is much less evidence how one's peer group affects the treatment effect of a leaderboard. Through a pre-registered field experiment involving more than 1000 users on an online movie recommender system, we expose users to leaderboards, but different sets of users are exposed to different peer groups. Contrary to what a standard behavioral model would predict, we find that a user's contribution increases when their peer's scores are more dispersed. We also find that decreasing average peer contributions motivates a user to contribute more. Moreover, these effects are themselves mediated by group size. This suggests that existing theories of motivation and demotivation with regards to leaderboards may need revision, and also illustrates the potential of using personalized leaderboards to increase contributions.
