IDEAS home Printed from https://ideas.repec.org/a/spr/scient/v123y2020i2d10.1007_s11192-020-03419-3.html
   My bibliography  Save this article

The impact of research output on economic growth by fields of science: a dynamic panel data analysis, 1980–2016

Author

Listed:
  • Tânia Pinto

    (University of Porto)

  • Aurora A. C. Teixeira

    (University of Porto, INESC Tec, OBEGEF)

Abstract

Whether research output significantly impacts on economic growth, and which research areas/fields of science matter the most to improve the economic performance of countries, stand as fundamental endeavors of scientific inquiry. Although the extant literature has analyzed the impact of research output on economic growth both holistically and by field, the impact of academic knowledge as a capital good (hard and social sciences) versus a final good (medical and humanities) has been largely neglected in analyses involving large sets of countries over a broad period of time. Based on a sample of 65 countries over 36 years (1980 to 2016), and employing system GMM dynamic panel data estimations, four main results are worth highlighting: (1) holistic research output positively and significantly impacts on economic growth; (2) both the academic knowledge of scientific areas that most resemble capital goods (physical sciences, engineering and technology, life sciences or social sciences) or final goods (base clinical, pre-clinical and health or arts and humanities) foster economic performance; (3) the global impact of research output is particularly high in the fields of engineering and technology, social sciences, and physics; and (4) the impact of research output on economic growth occurs mainly through structural change processes involving the reallocation of resources towards the industrial sector.

Suggested Citation

  • Tânia Pinto & Aurora A. C. Teixeira, 2020. "The impact of research output on economic growth by fields of science: a dynamic panel data analysis, 1980–2016," Scientometrics, Springer;Akadémiai Kiadó, vol. 123(2), pages 945-978, May.
  • Handle: RePEc:spr:scient:v:123:y:2020:i:2:d:10.1007_s11192-020-03419-3
    DOI: 10.1007/s11192-020-03419-3
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1007/s11192-020-03419-3
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.

    File URL: https://libkey.io/10.1007/s11192-020-03419-3?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Romer, Paul M, 1986. "Increasing Returns and Long-run Growth," Journal of Political Economy, University of Chicago Press, vol. 94(5), pages 1002-1037, October.
    2. Ling-Chu Lee & Pin-Hua Lin & Yun-Wen Chuang & Yi-Yang Lee, 2011. "Research output and economic productivity: a Granger causality test," Scientometrics, Springer;Akadémiai Kiadó, vol. 89(2), pages 465-478, November.
    3. Henry Laverde-Rojas & Juan C. Correa, 2019. "Can scientific productivity impact the economic complexity of countries?," Scientometrics, Springer;Akadémiai Kiadó, vol. 120(1), pages 267-282, July.
    4. Teixeira, Aurora A.C. & Fortuna, Natércia, 2010. "Human capital, R&D, trade, and long-run productivity. Testing the technological absorption hypothesis for the Portuguese economy, 1960-2001," Research Policy, Elsevier, vol. 39(3), pages 335-350, April.
    5. Klaus Jaffe & Mario Caicedo & Marcos Manzanares & Mario Gil & Alfredo Rios & Astrid Florez & Claudia Montoreano & Vicente Davila, 2013. "Productivity in Physical and Chemical Science Predicts the Future Economic Growth of Developing Countries Better than Other Popular Indices," PLOS ONE, Public Library of Science, vol. 8(6), pages 1-10, June.
    6. Robert M. Solow, 1956. "A Contribution to the Theory of Economic Growth," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 70(1), pages 65-94.
    7. William Easterly & Ross Levine, 1997. "Africa's Growth Tragedy: Policies and Ethnic Divisions," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 112(4), pages 1203-1250.
    8. G. M.P. Swann, 2009. "The Economics of Innovation," Books, Edward Elgar Publishing, number 13211.
    9. Roula Inglesi-Lotz & Tsangyao Chang & Rangan Gupta, 2015. "Causality between research output and economic growth in BRICS," Quality & Quantity: International Journal of Methodology, Springer, vol. 49(1), pages 167-176, January.
    10. K. Deininger & S. Jin & H. K. Nagarajan, 2009. "Land Reforms, Poverty Reduction, and Economic Growth: Evidence from India," Journal of Development Studies, Taylor & Francis Journals, vol. 45(4), pages 496-521.
    11. Peter Vinkler, 2008. "Correlation between the structure of scientific research, scientometric indicators and GDP in EU and non-EU countries," Scientometrics, Springer;Akadémiai Kiadó, vol. 74(2), pages 237-254, February.
    12. Ester G. Silva & Aurora A. C. Teixeira, 2011. "Does structure influence growth? A panel data econometric assessment of "relatively less developed" countries, 1979--2003," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 20(2), pages 457-510, April.
    13. Stephan, Paula E., 2010. "The Economics of Science," Handbook of the Economics of Innovation, in: Bronwyn H. Hall & Nathan Rosenberg (ed.), Handbook of the Economics of Innovation, edition 1, volume 1, chapter 0, pages 217-273, Elsevier.
    14. Mary O'Mahony & Marcel P. Timmer, 2009. "Output, Input and Productivity Measures at the Industry Level: The EU KLEMS Database," Economic Journal, Royal Economic Society, vol. 119(538), pages 374-403, June.
    15. David Roodman, 2009. "A Note on the Theme of Too Many Instruments," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 71(1), pages 135-158, February.
    16. Dag W. Aksnes & Liv Langfeldt & Paul Wouters, 2019. "Citations, Citation Indicators, and Research Quality: An Overview of Basic Concepts and Theories," SAGE Open, , vol. 9(1), pages 21582440198, February.
    17. Stephen Bond & Anke Hoeffler, 2001. "GMM Estimation of Empirical Growth Models," Economics Series Working Papers 2001-W21, University of Oxford, Department of Economics.
    18. Jang C. Jin, 2010. "Research Publications, Economic Growth And Causality: Japan'S Experience," Pacific Economic Review, Wiley Blackwell, vol. 15(5), pages 666-673, December.
    19. Enrique Moral-Benito, 2012. "Determinants of Economic Growth: A Bayesian Panel Data Approach," The Review of Economics and Statistics, MIT Press, vol. 94(2), pages 566-579, May.
    20. Barro, Robert J. & Lee, Jong Wha, 2013. "A new data set of educational attainment in the world, 1950–2010," Journal of Development Economics, Elsevier, vol. 104(C), pages 184-198.
    21. F. Moya-Anegón & V. Herrero-Solana, 1999. "Science in america latina: A comparison of bibliometric and scientific-technical indicators," Scientometrics, Springer;Akadémiai Kiadó, vol. 46(2), pages 299-320, October.
    22. Balconi, Margherita & Brusoni, Stefano & Orsenigo, Luigi, 2010. "In defence of the linear model: An essay," Research Policy, Elsevier, vol. 39(1), pages 1-13, February.
    23. Roula Inglesi-Lotz & Mehmet Balcilar & Rangan Gupta, 2014. "Time-varying causality between research output and economic growth in US," Scientometrics, Springer;Akadémiai Kiadó, vol. 100(1), pages 203-216, July.
    24. Mokyr, Joel, 2018. "The past and the future of innovation: Some lessons from economic history," Explorations in Economic History, Elsevier, vol. 69(C), pages 13-26.
    25. Coccia, Mario, 2019. "Why do nations produce science advances and new technology?," Technology in Society, Elsevier, vol. 59(C).
    26. Robert E. Hall & Charles I. Jones, 1999. "Why do Some Countries Produce So Much More Output Per Worker than Others?," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 114(1), pages 83-116.
    27. N. Gregory Mankiw & David Romer & David Weil, 1990. "A Contribution to the Empirics of Economic Growth," Working Papers 1990-24, Brown University, Department of Economics.
    28. Aurora A. C. Teixeira, 2014. "Evolution, roots and influence of the literature on National Systems of Innovation: a bibliometric account," Cambridge Journal of Economics, Cambridge Political Economy Society, vol. 38(1), pages 181-214.
    29. Arellano, Manuel & Bover, Olympia, 1995. "Another look at the instrumental variable estimation of error-components models," Journal of Econometrics, Elsevier, vol. 68(1), pages 29-51, July.
    30. Frantzen, Dirk, 2000. "Innovation, International Technological Diffusion and the Changing Influence of R&D on Productivity," Cambridge Journal of Economics, Cambridge Political Economy Society, vol. 24(2), pages 193-210, March.
    31. R. Inglesi-Lotz & A. Pouris, 2013. "The influence of scientific research output of academics on economic growth in South Africa: an autoregressive distributed lag (ARDL) application," Scientometrics, Springer;Akadémiai Kiadó, vol. 95(1), pages 129-139, April.
    32. Lucas, Robert Jr., 1988. "On the mechanics of economic development," Journal of Monetary Economics, Elsevier, vol. 22(1), pages 3-42, July.
    33. Stephen Bond & Anke Hoeffler & Jonathan Temple, 2001. "GMM Estimation of Empirical Growth Models," Economics Papers 2001-W21, Economics Group, Nuffield College, University of Oxford.
    34. Abdulnasser Hatemi-J & Ahdi N. Ajmi & Ghassen El Montasser & Roula Inglesi-Lotz & Rangan Gupta, 2016. "Research output and economic growth in G7 countries: new evidence from asymmetric panel causality testing," Applied Economics, Taylor & Francis Journals, vol. 48(24), pages 2301-2308, May.
    35. Jang C. Jin & Lawrence Jin, 2013. "Research publications and economic growth: evidence from cross-country regressions," Applied Economics, Taylor & Francis Journals, vol. 45(8), pages 983-990, March.
    36. Francesco Quatraro, 2010. "The Economics of Structural Change in Knowledge," Post-Print halshs-00727628, HAL.
    37. Blundell, Richard & Bond, Stephen, 1998. "Initial conditions and moment restrictions in dynamic panel data models," Journal of Econometrics, Elsevier, vol. 87(1), pages 115-143, August.
    38. N. Gregory Mankiw & David Romer & David N. Weil, 1992. "A Contribution to the Empirics of Economic Growth," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 107(2), pages 407-437.
    39. Leydesdorff, Loet & Wagner, Caroline, 2009. "Macro-level indicators of the relations between research funding and research output," Journal of Informetrics, Elsevier, vol. 3(4), pages 353-362.
    40. Juan Ricardo Perilla Jimenez, 2019. "Mainstream and evolutionary views of technology, economic growth and catching up," Journal of Evolutionary Economics, Springer, vol. 29(3), pages 823-852, July.
    41. Hamilton Ntuli & Roula Inglesi-Lotz & Tsangyao Chang & Anastassios Pouris, 2015. "Does research output cause economic growth or vice versa? Evidence from 34 OECD countries," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 66(8), pages 1709-1716, August.
    42. Teixeira, Aurora A.C. & Queirós, Anabela S.S., 2016. "Economic growth, human capital and structural change: A dynamic panel data analysis," Research Policy, Elsevier, vol. 45(8), pages 1636-1648.
    43. World Bank, 2017. "World Development Indicators 2017," World Bank Publications - Books, The World Bank Group, number 26447, December.
    44. Andrew G. Gibson & Ellen Hazelkorn, 2017. "Arts and humanities research, redefining public benefit, and research prioritization in Ireland," Research Evaluation, Oxford University Press, vol. 26(3), pages 199-210.
    45. Weinberger, J., 1976. "Science and Rule in Bacon's Utopia: An Introduction to the Reading of the New Atlantis," American Political Science Review, Cambridge University Press, vol. 70(3), pages 865-885, September.
    46. Jin, Jang C., 2009. "Economic research and economic growth: Evidence from East Asian economies," Journal of Asian Economics, Elsevier, vol. 20(2), pages 150-155, March.
    47. Francesco Quatraro, 2009. "Innovation, structural change and productivity growth: evidence from Italian regions, 1980--2003," Cambridge Journal of Economics, Cambridge Political Economy Society, vol. 33(5), pages 1001-1022, September.
    48. Fabricio Missio & Frederico Gonçalves Jayme Jr. & José Luis Oreiro, 2015. "The structuralist tradition in economics: methodological and macroeconomics aspects," Brazilian Journal of Political Economy, Center of Political Economy, vol. 35(2), pages 247-266.
    49. Philip Bodman & Thanh Le, 2013. "Assessing the roles that absorptive capacity and economic distance play in the foreign direct investment-productivity growth nexus," Applied Economics, Taylor & Francis Journals, vol. 45(8), pages 1027-1039, March.
    50. Audretsch, David B. & Bozeman, Barry & Combs, Kathryn L. & Feldman, Maryann & Link, Albert N. & Siegel, Donald S. & Stephan, Paula, 2002. "The Economics of Science and Technology," The Journal of Technology Transfer, Springer, vol. 27(2), pages 155-203, April.
    51. Rosenberg, Nathan & Nelson, Richard R., 1994. "American universities and technical advance in industry," Research Policy, Elsevier, vol. 23(3), pages 323-348, May.
    52. Buenstorf, Guido & Heinisch, Dominik P., 2020. "When do firms get ideas from hiring PhDs?," Research Policy, Elsevier, vol. 49(3).
    53. Aurora A. C. Teixeira & Luisa Mota, 2012. "A bibliometric portrait of the evolution, scientific roots and influence of the literature on university–industry links," Scientometrics, Springer;Akadémiai Kiadó, vol. 93(3), pages 719-743, December.
    54. Schot, Johan & Steinmueller, W. Edward, 2018. "Three frames for innovation policy: R&D, systems of innovation and transformative change," Research Policy, Elsevier, vol. 47(9), pages 1554-1567.
    55. Pier Saviotti & Andreas Pyka, 2004. "Economic development by the creation of new sectors," Journal of Evolutionary Economics, Springer, vol. 14(1), pages 1-35, January.
    56. Manuel Arellano & Stephen Bond, 1991. "Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equations," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 58(2), pages 277-297.
    57. Sakiru Adebola Solarin & Yuen Yee Yen, 2016. "A global analysis of the impact of research output on economic growth," Scientometrics, Springer;Akadémiai Kiadó, vol. 108(2), pages 855-874, August.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Callaghan, Christian William, 2021. "Growth contributions of technological change: Is there a burden of knowledge effect?," Technological Forecasting and Social Change, Elsevier, vol. 172(C).
    2. Chadi Azmeh, 2022. "Quantity and quality of research output and economic growth: empirical investigation for all research areas in the MENA countries," Scientometrics, Springer;Akadémiai Kiadó, vol. 127(11), pages 6147-6163, November.
    3. Khan, Muhammad Salar, 2022. "Absorptive capacities and economic growth in low- and middle-income economies," Structural Change and Economic Dynamics, Elsevier, vol. 62(C), pages 156-188.
    4. Rojko, Katarina & Lužar, Borut, 2022. "Scientific performance across research disciplines: Trends and differences in the case of Slovenia," Journal of Informetrics, Elsevier, vol. 16(2).
    5. Xiangfei Ma & Inna Gryshova & Viktoriia Khaustova & Olena Reshetnyak & Maryna Shcherbata & Denys Bobrovnyk & Mykyta Khaustov, 2022. "Assessment of the Impact of Scientific and Technical Activities on the Economic Growth of World Countries," Sustainability, MDPI, vol. 14(21), pages 1-35, November.
    6. Muhammad Salar Khan, 2021. "Absorptive capacities and economic growth in low and middle income economies," Papers 2109.11550, arXiv.org.
    7. Elizabeth S. Vieira & Jorge Cerdeira, 2022. "The integration of African countries in international research networks," Scientometrics, Springer;Akadémiai Kiadó, vol. 127(4), pages 1995-2021, April.
    8. Arman Pourghaz & Ehsan Bahrami Samani & Babak Shokri, 2023. "Analysis of the impact of research output on economic growth with using a multivariate random effects model," Scientometrics, Springer;Akadémiai Kiadó, vol. 128(4), pages 2259-2282, April.
    9. Julian D. Cortes & Diego Tellez & Jesus Godoy, 2021. "Mission Statement Effect on Research and Innovation Performance," Papers 2104.07476, arXiv.org.
    10. Juan C. Correa & Henry Laverde-Rojas & Julian Tejada & Fernando Marmolejo-Ramos, 2022. "The Sci-Hub effect on papers’ citations," Scientometrics, Springer;Akadémiai Kiadó, vol. 127(1), pages 99-126, January.
    11. Abramo, Giovanni & D'Angelo, Ciriaco Andrea & Di Costa, Flavia, 2022. "Revealing the scientific comparative advantage of nations: Common and distinctive features," Journal of Informetrics, Elsevier, vol. 16(1).
    12. Tânia Pinto & Aurora Teixeira, 2023. "Does scientific research output matter for Portugal’s economic growth?," GEE Papers 0174, Gabinete de Estratégia e Estudos, Ministério da Economia, revised Jul 2023.
    13. Julius Tan Gonzales, 2023. "Implications of AI innovation on economic growth: a panel data study," Journal of Economic Structures, Springer;Pan-Pacific Association of Input-Output Studies (PAPAIOS), vol. 12(1), pages 1-37, December.
    14. Pablo Jack & Jeremias Lachman & Andrés López, 2021. "Scientific knowledge production and economic catching-up: an empirical analysis," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(6), pages 4565-4587, June.
    15. Rolando Rubilar-Torrealba & Karime Chahuán-Jiménez & Hanns de la Fuente-Mella, 2022. "Analysis of the Growth in the Number of Patents Granted and Its Effect over the Level of Growth of the Countries: An Econometric Estimation of the Mixed Model Approach," Sustainability, MDPI, vol. 14(4), pages 1-12, February.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Tânia Pinto & Aurora Teixeira, 2023. "Does scientific research output matter for Portugal’s economic growth?," GEE Papers 0174, Gabinete de Estratégia e Estudos, Ministério da Economia, revised Jul 2023.
    2. Sakiru Adebola Solarin & Yuen Yee Yen, 2016. "A global analysis of the impact of research output on economic growth," Scientometrics, Springer;Akadémiai Kiadó, vol. 108(2), pages 855-874, August.
    3. Teixeira, Aurora A.C. & Queirós, Anabela S.S., 2016. "Economic growth, human capital and structural change: A dynamic panel data analysis," Research Policy, Elsevier, vol. 45(8), pages 1636-1648.
    4. Chadi Azmeh, 2022. "Quantity and quality of research output and economic growth: empirical investigation for all research areas in the MENA countries," Scientometrics, Springer;Akadémiai Kiadó, vol. 127(11), pages 6147-6163, November.
    5. Ulaşan, Bülent, 2012. "Cross-country growth empirics and model uncertainty: An overview," Economics - The Open-Access, Open-Assessment E-Journal (2007-2020), Kiel Institute for the World Economy (IfW Kiel), vol. 6, pages 1-69.
    6. Pablo Jack & Jeremias Lachman & Andrés López, 2021. "Scientific knowledge production and economic catching-up: an empirical analysis," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(6), pages 4565-4587, June.
    7. Arman Pourghaz & Ehsan Bahrami Samani & Babak Shokri, 2023. "Analysis of the impact of research output on economic growth with using a multivariate random effects model," Scientometrics, Springer;Akadémiai Kiadó, vol. 128(4), pages 2259-2282, April.
    8. Bloom, David E. & Canning, David & Kotschy, Rainer & Prettner, Klaus & Schünemann, Johannes, 2024. "Health and economic growth: Reconciling the micro and macro evidence," World Development, Elsevier, vol. 178(C).
    9. Bayraktar-Sağlam, Bahar & Yetkiner, Hakan, 2014. "A Romerian contribution to the empirics of economic growth," Journal of Policy Modeling, Elsevier, vol. 36(2), pages 257-272.
    10. E. Tsanana & X. Chapsa & C. Katrakilidis, 2016. "Is growth corrupted or bureaucratic? Panel evidence from the enlarged EU," Applied Economics, Taylor & Francis Journals, vol. 48(33), pages 3131-3147, July.
    11. Henry Laverde-Rojas & Juan C. Correa, 2019. "Can scientific productivity impact the economic complexity of countries?," Scientometrics, Springer;Akadémiai Kiadó, vol. 120(1), pages 267-282, July.
    12. Anabela Queirós & Aurora A.C. Teixeira, 2014. "Economic growth, human capital and structural change: an empirical analysis," FEP Working Papers 549, Universidade do Porto, Faculdade de Economia do Porto.
    13. Simplice A. Asongu, 2017. "Knowledge Economy Gaps, Policy Syndromes, and Catch-Up Strategies: Fresh South Korean Lessons to Africa," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 8(1), pages 211-253, March.
    14. Andrea Bonaccorsi & Daniele Biancardi & Mabel Sanchez Barrioluengo & Federico Biagi, 2019. "Study on Higher Education Institutions and Local Development," JRC Research Reports JRC117272, Joint Research Centre.
    15. Liu Haiyun & Yassin Elshain Yahia & Md Ismail Hossain & Sayyed Sadaqat Hussain Shah, 2023. "The effect of integration processes of the Common Market for Eastern and Southern Africa on the economic growth of the member states," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 28(1), pages 93-111, January.
    16. Farid Gasmi & Laura Recuero Virto & Denis Couvet, 2020. "The Impact of Renewable Versus Non-renewable Natural Capital on Economic Growth," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 77(2), pages 271-333, October.
    17. Alali, Walid Y., 2010. "Impact of Institutions and Policy on Economic Growth: Empirical Evidence," MPRA Paper 115610, University Library of Munich, Germany.
    18. Simplice A. Asongu, 2017. "The Comparative Economics of Knowledge Economy in Africa: Policy Benchmarks, Syndromes, and Implications," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 8(2), pages 596-637, June.
    19. Silberberger, Magdalene & Königer, Jens, 2016. "Regulation, trade and economic growth," Economic Systems, Elsevier, vol. 40(2), pages 308-322.
    20. Magrini, Stefano, 2004. "Regional (di)convergence," Handbook of Regional and Urban Economics, in: J. V. Henderson & J. F. Thisse (ed.), Handbook of Regional and Urban Economics, edition 1, volume 4, chapter 62, pages 2741-2796, Elsevier.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:spr:scient:v:123:y:2020:i:2:d:10.1007_s11192-020-03419-3. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.