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On the effects of institutional size in university classifications: the case of the Shanghai ranking

Author

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  • Domingo Docampo

    (Universidad de Vigo)

  • Lawrence Cram

    (Australian National University)

Abstract

University rankings frequently struggle to delineate the separate contributions of institutional size and excellence. This presents a problem for public policy and university leadership, for example by blurring the pursuit of excellence with the quest for growth. This paper provides some insight into the size/excellence debate by exploring the explicit contribution of institutional size to the results of the Shanghai ranking indicators. Principal components analysis of data from the Shanghai ranking (2013 edition) is used to explore factors that contribute to the variation of the total score. The analysis includes the five non-derived ARWU indicators (Alumni, Award, HiCi, S&N and PUB) and uses the number of equivalent full-time academic staff (FTE) as a measure of size. Two significant but unequal factors are found, together explaining almost 85 % of the variance in the sample. A factor clearly associated with the size of the institution explains around 30 % of the variance. To sharpen the interpretation of the smaller factor as a measure of the effect of size, we extend the analysis to a larger set of institutions to eliminate size-dependent selection effects. We also show that eliminating outlying universities makes little difference to the factors. Our inferences are insensitive to the use of raw data, compared with the compressed and scaled indicators used by ARWU. We conclude that around 30 % of the variation in the ARWU indicators can be attributed to variation in size. Clearly, size-related factors cannot be overlooked when using the ranking results. Around 55 % of the variation arises from a component which is uncorrelated with size and which measures the quality of research conducted at the highest levels. The presence of this factor encourages further work to explore its nature and origins.

Suggested Citation

  • Domingo Docampo & Lawrence Cram, 2015. "On the effects of institutional size in university classifications: the case of the Shanghai ranking," Scientometrics, Springer;Akadémiai Kiadó, vol. 102(2), pages 1325-1346, February.
    • Handle: RePEc:spr:scient:v:102:y:2015:i:2:d:10.1007_s11192-014-1488-z
    DOI: 10.1007/s11192-014-1488-z
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    References listed on IDEAS

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    11. Domingo Docampo & Lawrence Cram, 2014. "On the internal dynamics of the Shanghai ranking," Scientometrics, Springer;Akadémiai Kiadó, vol. 98(2), pages 1347-1366, February.
    12. Domingo Docampo, 2011. "Erratum to: On using the Shanghai ranking to assess the research performance of university systems," Scientometrics, Springer;Akadémiai Kiadó, vol. 86(1), pages 237-237, January.
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    Cited by:

    1. Milica Maricic & Jose A. Egea & Veljko Jeremic, 2019. "A Hybrid Enhanced Scatter Search—Composite I-Distance Indicator (eSS-CIDI) Optimization Approach for Determining Weights Within Composite Indicators," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 144(2), pages 497-537, July.
    2. Jacek Pietrucha, 2018. "Country-specific determinants of world university rankings," Scientometrics, Springer;Akadémiai Kiadó, vol. 114(3), pages 1129-1139, March.
    3. D. Docampo & D. Egret & L. Cram, 2015. "The effect of university mergers on the Shanghai ranking," Scientometrics, Springer;Akadémiai Kiadó, vol. 104(1), pages 175-191, July.
    4. Vicente Safón & Domingo Docampo, 2020. "Analyzing the impact of reputational bias on global university rankings based on objective research performance data: the case of the Shanghai Ranking (ARWU)," Scientometrics, Springer;Akadémiai Kiadó, vol. 125(3), pages 2199-2227, December.
    5. Fredrik Niclas Piro & Gunnar Sivertsen, 2016. "How can differences in international university rankings be explained?," Scientometrics, Springer;Akadémiai Kiadó, vol. 109(3), pages 2263-2278, December.
    6. Domingo Docampo & Lawrence Cram, 2017. "Academic performance and institutional resources: a cross-country analysis of research universities," Scientometrics, Springer;Akadémiai Kiadó, vol. 110(2), pages 739-764, February.

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