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American Economic Review: Vol. 102 No. 3 (May 2012)

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Is Wikipedia Biased?

Article Citation

Greenstein, Shane, and Feng Zhu. 2012. "Is Wikipedia Biased?" American Economic Review, 102(3): 343-48.

DOI: 10.1257/aer.102.3.343

Abstract

This study empirically examines whether Wikipedia has a neutral point of view. It develops a method for measuring the slant of 28 thousand articles about US politics. In its earliest years, Wikipedia's political entries lean Democrat on average. The slant diminishes during Wikipedia's decade of experience. This change does not arise primarily from revision of existing articles. Most articles arrive with a slant, and most articles change only mildly from their initial slant. The overall slant changes due to the entry of articles with opposite slants, leading toward neutrality for many topics, not necessarily within specific articles.

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Authors

Greenstein, Shane (Northwestern U)
Zhu, Feng (U Southern CA)

JEL Classifications

L82: Entertainment; Media
L86: Information and Internet Services; Computer Software


American Economic Review


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