Expressive Law and File Sharing Norms

46 Pages Posted: 15 Sep 2005 Last revised: 28 Sep 2017

Date Written: September 6, 2005


Social norms play a central role in explaining why people obey the law. Models featuring the expressive function of the law focus on the norm-mediated effect of law on behavior - that is, law influences existing social norms, which in turn influence behavior. In this Article, we focus on the question of how law influences social norms. We seek to understand the characteristics of law that influence people's opinions about the social acceptability of the behavior law seeks to regulate. To address these questions, we examined the practice of sharing digital files of copyrighted material ("file sharing"). We conducted an experiment to identify the characteristics of copyright law that influence perceptions of the consensus about unlawful file sharing. Results suggest that both formal and informal sanctions associated with copyright regulations influence perceptions of file sharing behavior. At the same time, law did not influence perceptions of file sharing behavior in the absence of any sanctions, and making salient the moral justifications for refraining from unlawful file sharing also did not influence perceptions. We discuss the implications of our study both for the theoretical debate about the expressive function of the law, and for the policy debate regarding curbing unlawful file sharing.

Suggested Citation

Feldman, Yuval and Nadler, Janice, Expressive Law and File Sharing Norms (September 6, 2005). San Diego Law Review, Vol. 43, pp. 577-618, 2006, Northwestern Public Law Research Paper No. 05-18, Bar Ilan Univ. Pub Law Working Paper No. 12-05, Available at SSRN:

Yuval Feldman

Bar-Ilan University - Faculty of Law ( email )

Faculty of Law
Ramat Gan, 52900

Janice Nadler (Contact Author)

Northwestern University - School of Law

375 E. Chicago Ave
Chicago, IL 60611
United States
312-503-3228 (Phone)
312-503-2035 (Fax)

American Bar Foundation ( email )

750 N. Lake Shore Drive
Chicago, IL 60611

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