This study examines micro-geographic clustering in the production and recognition of academic research. Three U.S. ZIP codes are associated with over 40 percent of articles in the top five economics journals and those articles garnered one-half of all citations in these journals from 2000 to 2015. Such micro-geographic concentration is not apparent in other disciplines, even those like chemistry that rely on specialized laboratories. Concentration of citations to economics articles whose authors are associated with a few key ZIP codes has strengthened over time, even as it has weakened for other disciplines. This micro-geographic concentration may increase systemic risk by reducing the diversity of economics research that is published and cited and may lead to insufficient research attention to local context.

中文翻译：

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学术研究的微观地理学：经济学有多独特？

本研究考察了学术研究的产生和认可中的微观地理聚类。三个美国邮政编码与前五名经济学期刊中超过 40% 的文章相关，这些文章在 2000 年至 2015 年期间获得了这些期刊所有引用的一半。这种微观地理集中在其他学​​科中并不明显，即使是那些就像依赖专业实验室的化学。随着时间的推移，对作者与几个关键邮政编码相关联的经济学文章的引用集中度有所提高，尽管其他学科的引用率有所下降。这种微观地理集中可能会降低已发表和引用的经济学研究的多样性，从而增加系统性风险，并可能导致研究对当地背景的关注不足。