Network analysis of “top-five” economics journals
分析了2000至2024年间五大经济学期刊的知识生产模式，发现理论文章占比下降，实证研究扩张，但少数美国精英大学在引文和合著网络中始终占据核心地位。
• In economics journals, the share of theoretical work declined between 2000 and 2024, while empirical research, especially in development, labor, and public economics, expanded and received substantially higher citation counts. • Network analysis of economics journals reveals persistent concentrations of scholarly influence. • In the economics discipline, a small set of elite U.S. universities occupies central positions in citation and co-authorship networks. • Despite changes in research topics and methods, the structure of scholarly knowledge production in economics remains hierarchical, suggesting that intellectual innovation occurs within a stable institutional core. This paper examines patterns in knowledge production within the top-five economics journals from 2000 to 2024. Drawing on the full set of published articles and associated bibliometric details, citations, co-authorship links, and institutional affiliations, I document notable shifts in the orientation of research. The share of theoretical work has declined, while empirical fields, particularly development, labor, and public economics, have expanded. Network analysis shows that although the substantive questions and analytical approaches in top-five journals are changing, a small group of U.S. universities continues to account for a disproportionate share of highly cited work and occupies central positions in citation networks, a core that at the same time facilitates communication and exchange across fields.