IDEAS home Printed from https://ideas.repec.org/a/spr/scient/v88y2011i3d10.1007_s11192-011-0415-9.html
   My bibliography  Save this article

The effect of academic inbreeding on scientific effectiveness

Author

Listed:
  • Ozlem Inanc

    (Işık University)

  • Onur Tuncer

    (Istanbul Technical University)

Abstract

In academia, the term “inbreeding” refers to a situation wherein PhDs are employed in the very same institution that trained them during their doctoral studies. Academic inbreeding has a negative perception on the account that it damages both scientific effectiveness and productivity. In this article, the effect of inbreeding on scientific effectiveness is investigated through a case study. This problem is addressed by utilizing Hirsch index as a reliable metric of an academic’s scientific productivity. Utilizing the dataset, constructed with academic performance indicators of individuals from the Mechanical and Aeronautical Engineering Departments, of the Turkish Technical Universities, we demonstrate that academic inbreeding has a negative impact on apparent scientific effectiveness through a negative binomial model. This model appears to be the most suitable one for the dataset which is a type of count data. We report chi-square statistics and likelihood ratio test for the parameter alpha. According to the chi-square statistics the model is significant as a whole. The incidence rate ratio for the variable “inbreeding” is estimated to be 0.11 and this ratio tells that, holding all the other factors constant, for the inbred faculty, the h-index is about 89% lower when compared to the non-inbred faculty. Furthermore, there exists negative and statistically significant correlation with an individual’s productivity and the percentage of inbred faculty members at the very same department. Excessive practice of inbreeding adversely affects the overall productivity. Decision makers are urged to limit this practice to a minimum in order to foster a vibrant research environment. Furthermore, it is also found that scientific productivity of an individual decreases towards the end of his scientific career.

Suggested Citation

  • Ozlem Inanc & Onur Tuncer, 2011. "The effect of academic inbreeding on scientific effectiveness," Scientometrics, Springer;Akadémiai Kiadó, vol. 88(3), pages 885-898, September.
    • Handle: RePEc:spr:scient:v:88:y:2011:i:3:d:10.1007_s11192-011-0415-9
    DOI: 10.1007/s11192-011-0415-9
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1007/s11192-011-0415-9
    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/s11192-011-0415-9?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. Michael M. Knetter & Thomas J. Prusa, 2021. "Macroeconomic factors and antidumping filings: evidence from four countries," World Scientific Book Chapters, in: Thomas J Prusa (ed.), Economic Effects of Antidumping, chapter 8, pages 153-169, World Scientific Publishing Co. Pte. Ltd..
    2. Hugo Horta & Francisco M. Veloso & Rócio Grediaga, 2010. "Navel Gazing: Academic Inbreeding and Scientific Productivity," Management Science, INFORMS, vol. 56(3), pages 414-429, March.
    3. Hamermesh, Daniel S. & Pfann, Gerard A., 2009. "Markets for Reputation: Evidence on Quality and Quantity in Academe," IZA Discussion Papers 4610, Institute of Labor Economics (IZA).
    4. Rosenberg, Nathan & Nelson, Richard R., 1994. "American universities and technical advance in industry," Research Policy, Elsevier, vol. 23(3), pages 323-348, May.
    5. John Panaretos & Chrisovaladis Malesios, 2009. "Assessing scientific research performance and impact with single indices," Scientometrics, Springer;Akadémiai Kiadó, vol. 81(3), pages 635-670, December.
    6. Jaffe, Adam B, 1989. "Real Effects of Academic Research," American Economic Review, American Economic Association, vol. 79(5), pages 957-970, December.
    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. Lokman Tutuncu & Recep Yucedogru & Idris Sarisoy, 2022. "Academic favoritism at work: insider bias in Turkish national journals," Scientometrics, Springer;Akadémiai Kiadó, vol. 127(5), pages 2547-2576, May.
    2. Olga Gorelova & Andrey Lovakov, 2016. "Academic Inbreeding and Research Productivity Of Russian Faculty Members," HSE Working papers WP BRP 32/EDU/2016, National Research University Higher School of Economics.
    3. Celis, Sergio & Kim, Jeongeun, 2018. "The making of homophilic networks in international research collaborations: A global perspective from Chilean and Korean engineering," Research Policy, Elsevier, vol. 47(3), pages 573-582.
    4. Engin Karadag & S. Koza Ciftci, 2022. "Deepening the Effects of the Academic Inbreeding: Its Impact on Individual and Institutional Research Productivity," Research in Higher Education, Springer;Association for Institutional Research, vol. 63(6), pages 1015-1036, September.
    5. Stelios Katranidis & Theodore Panagiotidis & Kostas Zontanos, 2022. "A note on the relative productivity drivers of economists: a probit/logit approach for six European countries," Economic Change and Restructuring, Springer, vol. 55(4), pages 2171-2178, November.
    6. Borenstein, Denis & Perlin, Marcelo S. & Imasato, Takeyoshi, 2022. "The Academic Inbreeding Controversy: Analysis and Evidence from Brazil," Journal of Informetrics, Elsevier, vol. 16(2).
    7. Luís Filipe Miranda Grochocki & Andrea Felippe Cabello, 2023. "Research collaboration networks in maturing academic environments," Scientometrics, Springer;Akadémiai Kiadó, vol. 128(4), pages 2535-2556, April.
    8. Russell Smyth & Vinod Mishra, 2014. "Academic inbreeding and research productivity and impact in Australian law schools," Scientometrics, Springer;Akadémiai Kiadó, vol. 98(1), pages 583-618, January.
    9. Grochocki, Luís Filipe de Miranda & Cabello, Andrea Felippe, 2022. "Academic endogamy or immobility? The impact on scholarly productivity in a developing country," International Journal of Educational Development, Elsevier, vol. 94(C).
    10. Stelios Katranidis & Theodore Panagiotidis & Costas Zontanos, 2017. "Economists, Research Performance and National Inbreeding: North Versus South," Economic Notes, Banca Monte dei Paschi di Siena SpA, vol. 46(1), pages 145-163, February.
    11. repec:hig:wpaper:32edu2015 is not listed on IDEAS
    12. Vadim N. Gureyev & Nikolay A. Mazov & Denis V. Kosyakov & Andrey E. Guskov, 2020. "Review and analysis of publications on scientific mobility: assessment of influence, motivation, and trends," Scientometrics, Springer;Akadémiai Kiadó, vol. 124(2), pages 1599-1630, August.
    13. Horta, Hugo & Yudkevich, Maria, 2016. "The role of academic inbreeding in developing higher education systems: Challenges and possible solutions," Technological Forecasting and Social Change, Elsevier, vol. 113(PB), pages 363-372.
    14. Marek Kosmulski, 2015. "Careers of young Polish chemists," Scientometrics, Springer;Akadémiai Kiadó, vol. 102(2), pages 1455-1465, February.
    15. Shibayama, Sotaro & Baba, Yasunori, 2015. "Impact-oriented science policies and scientific publication practices: The case of life sciences in Japan," Research Policy, Elsevier, vol. 44(4), pages 936-950.
    16. Tolga Yuret, 2018. "Path to success: an analysis of US educated elite academics in the United States," Scientometrics, Springer;Akadémiai Kiadó, vol. 117(1), pages 105-121, October.

    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. Wipo, 2011. "World Intellectual Property Report 2011- The Changing Face of Innovation," WIPO Economics & Statistics Series, World Intellectual Property Organization - Economics and Statistics Division, number 2011:944, April.
    2. Beck, Mathias & Junge, Martin & Kaiser, Ulrich, 2017. "Public Funding and Corporate Innovation," IZA Discussion Papers 11196, Institute of Labor Economics (IZA).
    3. Deepak Hegde, 2005. "Public and Private Universities: Unequal Sources of Regional Innovation?," Economic Development Quarterly, , vol. 19(4), pages 373-386, November.
    4. Lee Branstetter & Kwon Hyeog Ug, 2004. "The Restructuring Of Japanese Research And Development: The Increasing Impact Of Science On Japanese R&D," Discussion papers 04021, Research Institute of Economy, Trade and Industry (RIETI).
    5. Hall, Browyn H. & Link, Albert N. & Scott, John T., 2000. "Universities as Research Partners," Department of Economics, Working Paper Series qt1np920r9, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    6. Martina Kauffeld-Monz, 2005. "Knowledge spillovers within regional networks of innovation and the contribution made by public research," ERSA conference papers ersa05p440, European Regional Science Association.
    7. Bronwyn H. Hall & Albert N. Link & John T. Scott, 2003. "Universities as Research Partners," The Review of Economics and Statistics, MIT Press, vol. 85(2), pages 485-491, May.
    8. Becker Wolfgang & Peters Jürgen, 2005. "Innovation Effects of Science-Related Technological Opportunities / Innovationseffekte von technologischen Möglichkeiten aus dem Wissenschaftsbereich: Theoretical Considerations and Empirical Findings," Journal of Economics and Statistics (Jahrbuecher fuer Nationaloekonomie und Statistik), De Gruyter, vol. 225(2), pages 130-150, April.
    9. Abramo, Giovanni & Cicero, Tindaro & D’Angelo, Ciriaco Andrea, 2012. "The dispersion of research performance within and between universities as a potential indicator of the competitive intensity in higher education systems," Journal of Informetrics, Elsevier, vol. 6(2), pages 155-168.
    10. Castelnovo, Paolo & Florio, Massimo & Forte, Stefano & Rossi, Lucio & Sirtori, Emanuela, 2018. "The economic impact of technological procurement for large-scale research infrastructures: Evidence from the Large Hadron Collider at CERN," Research Policy, Elsevier, vol. 47(9), pages 1853-1867.
    11. Foray, Dominique & Lissoni, Francesco, 2010. "University Research and Public–Private Interaction," 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 275-314, Elsevier.
    12. Monjon, Stephanie & Waelbroeck, Patrick, 2003. "Assessing spillovers from universities to firms: evidence from French firm-level data," International Journal of Industrial Organization, Elsevier, vol. 21(9), pages 1255-1270, November.
    13. Wesley M. Cohen & Richard R. Nelson & John P. Walsh, 2003. "Links and Impacts: The Influence of Public Research on Industrial R&D," Chapters, in: Aldo Geuna & Ammon J. Salter & W. Edward Steinmueller (ed.), Science and Innovation, chapter 4, Edward Elgar Publishing.
    14. Hottenrott, Hanna & Thorwarth, Susanne, 2010. "Industry funding of university research and scientific productivity," ZEW Discussion Papers 10-105, ZEW - Leibniz Centre for European Economic Research.
    15. Garcia-Quevedo, Jose, 2000. "University Research And The Location Of Innovative Activities In Spain," ERSA conference papers ersa00p178, European Regional Science Association.
    16. Segarra Blasco, Agustí & Arauzo Carod, Josep Maria, 2005. "External sources of innovation and industry-university interaction:evidence from Spanish firms," Working Papers 2072/1751, Universitat Rovira i Virgili, Department of Economics.
    17. Shane, Scott, 2004. "Encouraging university entrepreneurship? The effect of the Bayh-Dole Act on university patenting in the United States," Journal of Business Venturing, Elsevier, vol. 19(1), pages 127-151, January.
    18. Russell Smyth & Vinod Mishra, 2014. "Academic inbreeding and research productivity and impact in Australian law schools," Scientometrics, Springer;Akadémiai Kiadó, vol. 98(1), pages 583-618, January.
    19. Autant-Bernard, Corinne, 2001. "Science and knowledge flows: evidence from the French case," Research Policy, Elsevier, vol. 30(7), pages 1069-1078, August.
    20. Ugo Rizzo & Nicolò Barbieri & Laura Ramaciotti & Demian Iannantuono, 2020. "The division of labour between academia and industry for the generation of radical inventions," The Journal of Technology Transfer, Springer, vol. 45(2), pages 393-413, April.

    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:88:y:2011:i:3:d:10.1007_s11192-011-0415-9. 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.