中文摘要
本文利用意大利境内版权采纳的差异——源于拿破仑军事胜利的时间先后——来考察版权对创造力的因果效应。基准回归比较了采纳版权与未采纳版权的意大利各邦之间歌剧产出变化。该分析得出三个主要结果。第一,版权的采纳导致新创作歌剧数量显著增加。第二,版权提升了新歌剧的质量,质量既以其即时成功衡量,也以其持久性衡量。第三,版权保护期延长至原始创作者去世之后并未带来任何收益。
Abstract
This paper exploits variation in the adoption of copyrights within Italy—due to the timing of Napoléon’s military victories—to investigate the causal effects of copyrights on creativity. Baseline regressions compare changes in opera production across Italian states with and without copyrights. This analysis yields three main results. First, the adoption of copyrights led to a significant increase in the number of newly created operas. Second, copyrights raised the quality of new operas, measured both by their immediate success and by their longevity. Third, there were no benefits from copyright extensions beyond the life of the original creator.