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A multi-methodology on building a corporate governance index from the perspectives of academics and practitioners for firms in Greece

Michail Nerantzidis (Department of Public Administration, Panteion University of Political and Social Sciences, Athens, Greece)

Corporate Governance

ISSN: 1472-0701

Publication date: 4 April 2016

Abstract

Purpose

The purpose of this paper is to look inside the “black box” in corporate governance (CG) measurement, and shed some light on how to construct a transparent, reliable and valid index, considering equally both the academics and practitioners’ perspectives.

Design/methodology/approach

A synthesized literature review is presented and a CG index is developed combining the strengths of three different methodologies: the Delphi method, the classical test theory (CTT) and the analytic hierarchy process (AHP). This approach helps authors to break the process into separate steps and to select the appropriate techniques to support their decision regarding the norms, the criteria, the variables and the weights that someone should use to construct a CG index.

Findings

The authors’ analysis indicates that a well-designed CG index requires a combination of research methods to identify the best options to solve several methodological issues in index construction. For the application of this multi-methodology in Greece, the authors used two equal and independent samples to explore the different perspectives regarding the importance of the index criteria and sub-criteria. This process provides evidence that the opinion of academics and practitioners in Greece tend to converge. Moreover, it is found that this multi-methodology produces the highest variation in CG scores and ranking orders, as opposed to a traditional approach, in measuring CG disclosure, an important issue with econometric implications.

Research limitations/implications

The limitations of this study are associated with the methods used.

Practical implications

This paper provides practical implications for investors and commercial vendors. For the former, it highlights the need to be more cautious and/or suspicious when they use CG ratings, meaning that they should comprehend the base of the ratings models, and for the latter, it demonstrates the importance of enhancing the transparency in CG indices construction.

Originality/value

The value of the paper lies in improved understanding of the methodological issues in constructing CG indices. This is quite interesting because this approach could serve as a roadmap for other researchers.

Keywords

  • Experts
  • Analytic hierarchy process
  • Delphi method
  • Classical test theory
  • Corporate governance index

Acknowledgements

The author would like to thank the Heraclitus II: Investing in knowledge society through the European Social Fund, as this paper draws on data collected from the authors PhD thesis. The author is also very grateful to Dr John Filos for his comments and supervision, as well as to all academics and practitioners who participated in his research. Furthermore, the author would like to thank Dr Ioannis Tsalavoutas for his recommendations and the participants in the 10th European Academic Conference on “Internal Audit and Corporate Governance and in the International Conference – International Business ICIB, for their comments. Last but not least, the author would like to thank the anonymous reviewers and the editor from the Corporate Governance: The International Journal of Business in Society for their invaluable suggestions for improvement.

Citation

Nerantzidis, M. (2016), "A multi-methodology on building a corporate governance index from the perspectives of academics and practitioners for firms in Greece", Corporate Governance, Vol. 16 No. 2, pp. 295-329. https://doi.org/10.1108/CG-08-2015-0107

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Publisher

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Emerald Group Publishing Limited

Copyright © 2016, Emerald Group Publishing Limited

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