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Specialization trends in economics research: A large‐scale study using natural language processing and citation analysis

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  • Sebastian Galiani
  • Ramiro H. Gálvez
  • Ian Nachman

Abstract

This article conducts a comprehensive analysis of specialization trends within and across fields of economics research. We collect data on 24,273 articles published between 1970 and 2016 in general research economics outlets and employ machine learning techniques to enrich the collected data. Results indicate that theory and econometric methods papers are becoming increasingly specialized, with a narrowing scope and steady or declining citations from outside economics and from other fields of economics research. Conversely, applied papers are covering a broader range of topics, receiving more extramural citations from fields like medicine, and psychology. Trends in applied theory articles are unclear.

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  • Sebastian Galiani & Ramiro H. Gálvez & Ian Nachman, 2025. "Specialization trends in economics research: A large‐scale study using natural language processing and citation analysis," Economic Inquiry, Western Economic Association International, vol. 63(1), pages 289-329, January.
    • Handle: RePEc:bla:ecinqu:v:63:y:2025:i:1:p:289-329
    DOI: 10.1111/ecin.13261
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    1. James J. Heckman & Sidharth Moktan, 2020. "Publishing and Promotion in Economics: The Tyranny of the Top Five," Journal of Economic Literature, American Economic Association, vol. 58(2), pages 419-470, June.
    2. Markus Brueckner & Hannes Schwandt, 2015. "Income and Population Growth," Economic Journal, Royal Economic Society, vol. 125(589), pages 1653-1676, December.
    3. Kosnik, Lea-Rachel, 2015. "What have economists been doing for the last 50 years? A text analysis of published academic research from 1960-2010," Economics - The Open-Access, Open-Assessment E-Journal (2007-2020), Kiel Institute for the World Economy (IfW Kiel), vol. 9, pages 1-38.
    4. Nathan S. Balke, 2000. "Credit and Economic Activity: Credit Regimes and Nonlinear Propagation of Shocks," The Review of Economics and Statistics, MIT Press, vol. 82(2), pages 344-349, May.
    5. Levitt, Steven D, 1998. "Why Do Increased Arrest Rates Appear to Reduce Crime: Deterrence, Incapacitation, or Measurement Error?," Economic Inquiry, Western Economic Association International, vol. 36(3), pages 353-372, July.
    6. Galiani, Sebastian & Gálvez, Ramiro H., 2019. "An empirical approach based on quantile regression for estimating citation ageing," Journal of Informetrics, Elsevier, vol. 13(2), pages 738-750.
    7. Joshua Angrist & Pierre Azoulay & Glenn Ellison & Ryan Hill & Susan Feng Lu, 2017. "Economic Research Evolves: Fields and Styles," American Economic Review, American Economic Association, vol. 107(5), pages 293-297, May.
    8. Josh Angrist & Pierre Azoulay & Glenn Ellison & Ryan Hill & Susan Feng Lu, 2020. "Inside Job or Deep Impact? Extramural Citations and the Influence of Economic Scholarship," Journal of Economic Literature, American Economic Association, vol. 58(1), pages 3-52, March.
    9. Victoria Anauati & Sebastian Galiani & Ramiro H. Gálvez, 2016. "Quantifying The Life Cycle Of Scholarly Articles Across Fields Of Economic Research," Economic Inquiry, Western Economic Association International, vol. 54(2), pages 1339-1355, April.
    10. Yano, Makoto, 1985. "Competitive Equilibria on Turnpikes in a McKenzie Economy, II: An Asymptotic Turnpike Theorem," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 26(3), pages 661-669, October.
    11. Donald W. K. Andrews & Patrik Guggenberger, 2014. "A Conditional-Heteroskedasticity-Robust Confidence Interval for the Autoregressive Parameter," The Review of Economics and Statistics, MIT Press, vol. 96(2), pages 376-381, May.
    12. Lea-Rachel Kosnik, 2016. "In Tandem Or Out Of Sync? Academic Economics Research And Public Policy Measures," Contemporary Economic Policy, Western Economic Association International, vol. 34(1), pages 190-202, January.
    13. Steven D. Levitt, 1998. "Juvenile Crime and Punishment," Journal of Political Economy, University of Chicago Press, vol. 106(6), pages 1156-1185, December.
    14. María Victoria Anauati & Sebastian Galiani & Ramiro H. Gálvez, 2020. "Differences In Citation Patterns Across Journal Tiers: The Case Of Economics," Economic Inquiry, Western Economic Association International, vol. 58(3), pages 1217-1232, July.
    15. Jeff E. Biddle & Daniel S. Hamermesh, 2017. "Theory and Measurement: Emergence, Consolidation, and Erosion of a Consensus," History of Political Economy, Duke University Press, vol. 49(5), pages 34-57, Supplemen.
    16. Quan Wen, 2002. "A Folk Theorem for Repeated Sequential Games," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 69(2), pages 493-512.
    17. Melis Kartal, 2015. "A Comparative Welfare Analysis of Electoral Systems with Endogenous Turnout," Economic Journal, Royal Economic Society, vol. 125(587), pages 1369-1392, September.
    18. Michael Dueker & Richard Startz, 1998. "Maximum-Likelihood Estimation Of Fractional Cointegration With An Application To U.S. And Canadian Bond Rates," The Review of Economics and Statistics, MIT Press, vol. 80(3), pages 420-426, August.
    19. Roskamp, Karl W, 1977. "Labor Productivity and the Elasticity of Factor Substitution in West German Industries, 1950-1960," The Review of Economics and Statistics, MIT Press, vol. 59(3), pages 366-371, August.
    20. Alberto Martín-Martín & Mike Thelwall & Enrique Orduna-Malea & Emilio Delgado López-Cózar, 2021. "Google Scholar, Microsoft Academic, Scopus, Dimensions, Web of Science, and OpenCitations’ COCI: a multidisciplinary comparison of coverage via citations," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(1), pages 871-906, January.
    21. María Victoria Anauati & Sebastian Galiani & Ramiro H. Gálvez, 2020. "How different are citation patterns across journal tiers in economics?," CEPR Press Book Chapters, in: Sebastian Galliani & Ugo Panizza (ed.), Publishing and Measuring Success in Economics, edition 1, volume 1, chapter 1, pages 35-43, Centre for Economic Policy Research.
    22. Janet Currie & Mark Stabile, 2003. "Socioeconomic Status and Child Health: Why Is the Relationship Stronger for Older Children?," American Economic Review, American Economic Association, vol. 93(5), pages 1813-1823, December.
    23. David B. Mustard, 2003. "Reexamining Criminal Behavior: The Importance of Omitted Variable Bias," The Review of Economics and Statistics, MIT Press, vol. 85(1), pages 205-211, February.
    24. Matthew T. Panhans & John D. Singleton, 2017. "The Empirical Economist’s Toolkit: From Models to Methods," History of Political Economy, Duke University Press, vol. 49(5), pages 127-157, Supplemen.
    25. Daniel S. Hamermesh, 2013. "Six Decades of Top Economics Publishing: Who and How?," Journal of Economic Literature, American Economic Association, vol. 51(1), pages 162-172, March.
    26. Jihong Lee, 2008. "Unforeseen Contingency and Renegotiation with Asymmetric Information," Economic Journal, Royal Economic Society, vol. 118(528), pages 678-694, April.
    27. C. Kirabo Jackson, 2010. "Do Students Benefit from Attending Better Schools? Evidence from Rule-based Student Assignments in Trinidad and Tobago," Economic Journal, Royal Economic Society, vol. 120(549), pages 1399-1429, December.
    28. Bikhchandani, Sushil & Hirshleifer, David & Welch, Ivo, 1992. "A Theory of Fads, Fashion, Custom, and Cultural Change in Informational Cascades," Journal of Political Economy, University of Chicago Press, vol. 100(5), pages 992-1026, October.
    29. David Card & Stefano DellaVigna, 2013. "Nine Facts about Top Journals in Economics," Journal of Economic Literature, American Economic Association, vol. 51(1), pages 144-161, March.
    30. David Matthews, 2021. "Drowning in the literature? These smart software tools can help," Nature, Nature, vol. 597(7874), pages 141-142, September.
    31. Katharine A. Anderson & Seth Richards-Shubik, 2022. "Collaborative Production in Science: An Empirical Analysis of Coauthorships in Economics," The Review of Economics and Statistics, MIT Press, vol. 104(6), pages 1241-1255, November.
    32. Jihong Lee, 2008. "Unforeseen Contingency and Renegotiation with Asymmetric Information," Economic Journal, Royal Economic Society, vol. 118(528), pages 678-694, April.
    33. Evans, George W, 1991. "Pitfalls in Testing for Explosive Bubbles in Asset Prices," American Economic Review, American Economic Association, vol. 81(4), pages 922-930, September.
    34. Gary S. Becker & Kevin M. Murphy, 1994. "The Division of Labor, Coordination Costs, and Knowledge," NBER Chapters, in: Human Capital: A Theoretical and Empirical Analysis with Special Reference to Education, Third Edition, pages 299-322, National Bureau of Economic Research, Inc.
    35. Mailath, George J & Samuelson, Larry & Swinkels, Jeroen M, 1993. "Extensive Form Reasoning in Normal Form Games," Econometrica, Econometric Society, vol. 61(2), pages 273-302, March.
    36. Alberto Martín-Martín & Mike Thelwall & Enrique Orduna-Malea & Emilio Delgado López-Cózar, 2021. "Correction to: Google Scholar, Microsoft Academic, Scopus, Dimensions, Web of Science, and OpenCitations’ COCI: a multidisciplinary comparison of coverage via citations," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(1), pages 907-908, January.
    37. Pierre-André Chiappori & Steven D. Levitt, 2003. "An Examination of the Influence of Theory and Individual Theorists on Empirical Research in Microeconomics," American Economic Review, American Economic Association, vol. 93(2), pages 151-155, May.
    38. Gary S. Becker & Kevin M. Murphy, 1994. "The Division of Labor, Coordination Costs, and Knowledge," NBER Chapters, in: Human Capital: A Theoretical and Empirical Analysis with Special Reference to Education, Third Edition, pages 299-322, National Bureau of Economic Research, Inc.
    39. Long, James E & Rasmussen, David W & Haworth, Charles T, 1977. "Income Inequality and City Size," The Review of Economics and Statistics, MIT Press, vol. 59(2), pages 244-246, May.
    40. Neral, John & Ochs, Jack, 1992. "The Sequential Equilibrium Theory of Reputation Building: A Further Test," Econometrica, Econometric Society, vol. 60(5), pages 1151-1169, September.
    41. Daniel S. Hamermesh, 2018. "Citations in Economics: Measurement, Uses, and Impacts," Journal of Economic Literature, American Economic Association, vol. 56(1), pages 115-156, March.
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