The influential piracy paper by Professors Oberholzer-Gee and Strumpf, although mainly based on proprietary data, contained an “important complement” to the main results, consisting of four “quasi-experiments” using publicly available data. This replication examines all of these quasi-experiments, first, by narrowly using identical data and statistical methods, as well as in a broader sense by extending or augmenting the data or methods. This study concludes that none of the four quasi-experiments provide evidence in support of OS' hypothesis that file-sharing has not harmed record sales.
Note of the Editor: The findings should be viewed as tentative until the paper has completed the review process and been published as an article.
The data set for this article can be found at: http://dx.doi.org/10.7910/DVN/YMDINY