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Research streams, gaps and opportunities in servant leadership research

Mohammad Zarei (Department of Strategy and Management, Norwegian School of Economics, Bergen, Norway)
Magne Supphellen (Department of Strategy and Management, Norwegian School of Economics, Bergen, Norway)
Richard P. Bagozzi (Ross School of Business, University of Michigan, Ann Arbor, Michigan, USA)

Leadership & Organization Development Journal

ISSN: 0143-7739

Article publication date: 19 December 2023

Issue publication date: 26 March 2024

911

Abstract

Purpose

The purpose is to use co-citation analysis of servant leadership (SL) research to investigate the evolution of the field, its subfields, gaps and opportunities for future research in a systematic manner.

Design/methodology/approach

A document co-citation technique and three clustering algorithms (latent semantic index (LSI), the log-likelihood ratio (LLR) and the mutual information (MI) index) were employed to analyse 24,030 references from 549 articles spanning a period of 50 years.

Findings

Cluster analyses reveal that SL research consists of eight distinct subfields: (1) conceptualisation and measurement of SL; (2) SL and related theories; (3) methodological foundations and empirical expansion of SL research; (4) individual-level cognitive effects of SL and related theories; (5) “Warmth effects” of leadership behaviour; (6) antecedents of effective leadership; (7) SL, marketing, sales management and ethics and (8) SL, job design and work engagement. Important gaps and opportunities for future research are identified.

Research limitations/implications

The analyses do not show a complete picture of research on SL. Interesting works used by subgroups of SL researchers may not have enough citations to be included in the results. Moreover, bibliometric analyses do not explain the impact of books, journals and articles on the practice of SL. The authors welcome future analyses of the most influential sources of SL practice. The authors expect that managerial and practice-oriented books and journals, such as the International Journal of Servant Leadership and the Servant Leadership Theory and Practice, would play a central role in such analyses.

Practical implications

The discussions of the nature of SL, its effects and antecedents are useful to leaders who want to develop a SL style or assist others in developing it. For researchers and doctoral students, the cluster analyses of co-citations give an overview of the subfields of SL research and reveal important knowledge gaps in the literature.

Social implications

SL has several favourable effects on the motivation and psychological well-being of followers. Also, followers tend to adopt a willingness to serve.

Originality/value

Previous research has categorised SL research into three broad categories or phases. The cluster analyses of the co-citations reported here reveal a meaningful structure of eight distinct subfields. Knowledge gaps within the subfields represent novel opportunities for future research on SL. The authors also suggest a new subfield of SL research: pedagogical approaches to the motivation and development of SL skills.

Keywords

Citation

Zarei, M., Supphellen, M. and Bagozzi, R.P. (2024), "Research streams, gaps and opportunities in servant leadership research", Leadership & Organization Development Journal, Vol. 45 No. 2, pp. 251-264. https://doi.org/10.1108/LODJ-02-2023-0072

Publisher

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Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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