Given the limited number of servant leadership (SL) applications in higher education research, this study aims to provide higher education researchers with a sound and validated scale to measure SL in academic settings. More specifically, it evaluates the psychometric properties of the seven-item SL scale (SL-7) developed by Liden and colleagues. For this purpose, we collected data from lecturers in Malaysia, conducted thorough data screening procedures followed by verifying the assumptions of item response theory (IRT) analysis. These procedures led to the exclusion of two items from the original scale. Next, we proceeded with graded response model (GRM) analysis and evaluated the discrimination parameters, difficulty thresholds, and the patterns of information provided by each item. Our analysis supports the conclusion that the resulting five-item validated scale effectively measures lecturers’ SL behavior in applied higher education research. Finally, we discussed the theoretical and practical implications of our findings and provided recommendations for future SL research in academic landscapes.
AboramadanM.DahleezK.HamadM. H. (2021). Servant leadership and academics outcomes in higher education: The role of job satisfaction. International Journal of Organizational Analysis, 29(3), 562–584. https://doi.org/10.1108/IJOA-11-2019-1923
2.
AitkinM. (2016). Expectation and maximization algorithm and extensions. In van der LindenW. J. (Ed.), Handbook of item response theory (Vol. 2, pp. 217–236). CRC Press. (Statistical Tools).
3.
Al-YoubiA. O.ZahedA. H. M.NahasM. N.HegazyA. A. (2021). The Roles of universities in development. In The leading world’s Most innovative universities (pp. 1–8). Springer International Publishing. https://doi.org/10.1007/978-3-030-59694-1_1
AndrichD. (1978). A rating formulation for ordered response categories. Psychometrika, 43(4), 561–573. https://doi.org/10.1007/BF02293814
6.
BakerF. B. (2001). The basics of item response theory. ERIC.
7.
BarbutoJ. E.GottfredsonR. K.SearleT. P. (2014). An examination of emotional intelligence as an antecedent of servant leadership. Journal of Leadership & Organizational Studies, 21(3), 315–323. https://doi.org/10.1177/1548051814531826
BeckC. D. (2014). Antecedents of servant leadership: A mixed methods study. Journal of Leadership & Organizational Studies, 21(3), 299–314. https://doi.org/10.1177/1548051814529993
10.
BentlerP. M. (2006). EQS 6 structural equations program manual. Multivariate Software, Inc.
11.
BentlerP. M.WuE. (2018). Supplement to EQS 6.4 for windows user’s guide. Multivariate Software, Inc.
12.
BezioK. M. S. (2024). Playing at being human: Finding leadership and empathy through digital games. Journal of Leadership Studies, 17(4), 38–46. https://doi.org/10.1002/jls.21881
13.
BillsberryJ.O'CallaghanS. (2024). The social construction of leadership, Implicit leadership theories, leader development, and the challenge of authenticity. Journal of Leadership Studies. (n/a). https://doi.org/10.1002/jls.21886
BrownS.BryantP. (2015). Getting to know the elephant: A call to advance servant leadership through construct consensus, empirical evidence, and multilevel theoretical development. Servant Leadership: Theory & Practice, 2(1), 10–35. https://csuepress.columbusstate.edu/sltp/vol2/iss1/2
17.
CanavesiA.MinelliE. (2022). Servant leadership: A systematic literature review and network analysis. Employee Responsibilities and Rights Journal, 34(3), 267–289. https://doi.org/10.1007/s10672-021-09381-3
18.
ChalmersR. P. (2012). mirt: A multidimensional item response theory package for the R environment. Journal of Statistical Software, 48(6), 1–29. https://doi.org/10.18637/jss.v048.i06
19.
ChenW.-H.ThissenD. (1997). Local dependence indexes for item pairs using item response theory. Journal of Educational and Behavioral Statistics, 22(3), 265–289. https://doi.org/10.2307/1165285
20.
ChoiS. W.GibbonsL. E.CraneP. K. (2011). lordif: An R package for detecting differential item functioning using iterative hybrid ordinal logistic regression/item response theory and monte carlo simulations. Journal of Statistical Software, 39(8), 1–30. https://doi.org/10.18637/jss.v039.i08
21.
ChristensenK. B.MakranskyG.HortonM. (2017). Critical values for Yen's Q(3): Identification of local dependence in the Rasch model using residual correlations. Applied Psychological Measurement, 41(3), 178–194. https://doi.org/10.1177/0146621616677520
22.
CreswellJ. W.CreswellJ. D. (2018). Research design: Qualitative, quantitative, and mixed methods approaches (5 ed.). Sage Publications.
23.
DaviesD.NylandJ. (2022). Critical thinking for an engaged university. In NylandJ.DaviesD. (Eds.), Curriculum challenges for universities: Agenda for change (pp. 3–19). Springer Nature Singapore. https://doi.org/10.1007/978-981-16-8582-8_1
24.
DennisM. J. (2021). The role of higher education in a post-COVID-19 world. Enrollment Management Report, 24(11), 3. https://doi.org/10.1002/emt.30740
25.
DorfmanP. W.HowellJ. P.HibinoS.LeeJ. K.TateU.BautistaA. (1997). Leadership in Western and Asian countries: Commonalities and differences in effective leadership processes across cultures. The Leadership Quarterly, 8(3), 233–274. https://doi.org/10.1016/S1048-9843(97)90003-5
26.
DuJ.QuddoosM. U.LatifM.AbbasS. M.SiddiqiA. A.AminM. S. (2024). Exploring the nexus between servant teacher leadership behaviour, psychological empowerment, and cognitive learning: Evidence from universities of Pakistan. Current Psychology, 43(18), 16148–16159. https://doi.org/10.1007/s12144-023-05505-0
27.
EhrhartM. G. (2004). Leadership and procedural justice climate as antecedents of unit-level organizational citizenship behavior. Personnel Psychology, 57(1), 61–94. https://doi.org/10.1111/j.1744-6570.2004.tb02484.x
28.
EhrnroothM.KoveshnikovA.BalabanovaE.WechtlerH. (2024). Western and non-western leadership styles and employee wellbeing: A case of a high-power distance context [Original Research]. Frontiers in Psychology, 14(1), Article 1261893. https://doi.org/10.3389/fpsyg.2023.1261893
29.
EmbretsonS. E.ReiseS. P. (2000). Item response theory for psychologists (1 ed.). Lawrence Erlbaum Associates, Inc.
30.
EvaN.RobinM.SendjayaS.van DierendonckD.LidenR. C. (2019). Servant leadership: A systematic review and call for future research. The Leadership Quarterly, 30(1), 111–132. https://doi.org/10.1016/j.leaqua.2018.07.004
31.
EvansL. (2017). University professors as academic leaders: Professorial leadership development needs and provision. Educational Management Administration & Leadership, 45(1), 123–140. https://doi.org/10.1177/1741143215578449
32.
FalkC. F. (2020). The monotonic polynomial graded response model: Implementation and a comparative study. Applied Psychological Measurement, 44(6), 465–481. https://doi.org/10.1177/0146621620909897
33.
GhahremaniH.James LemoineG.HartnellC. A. (2024). The Influence of servant leadership on internal career success: An examination of psychological climates and career progression expectations. Journal of Leadership & Organizational Studies, 31(2), 125–145. https://doi.org/10.1177/15480518241248217
34.
GhasemyM.AkbarzadehM.GaskinJ. E. (2022). Being satisfied and serving communities as outcomes of servant leadership in the academic context: Policies based on a multi-level structural equation model. Asia Pacific Education Review, 23(1), 69–86. https://doi.org/10.1007/s12564-021-09702-z
35.
GhasemyM.ElwoodJ. A.Roshan NejadM. (2022). Academics to serve the communities: Examining the hierarchical structure of a multidimensional servant leadership model in academia. The Journal of Higher Education Outreach & Engagement, 26(1), 51–70.
36.
GhasemyM. (2024). Replication data for: Psychometric properties of the SL-7 scale in academic settings (Version V1). Harvard Dataverse. https://doi.org/10.7910/DVN/FDDY2N
37.
GhasemyM.ElwoodJ. A.ScottG. (2024). Approaches to education for sustainability leadership development in higher education: An international comparative study in the Asia Pacific region. International Journal of Sustainability in Higher Education, 25(8), 1870–1894. https://doi.org/10.1108/IJSHE-11-2023-0558
38.
GhasemyM.FrömblingL. (2023). A conditional time-varying multivariate latent growth curve model for the relationships between lecturers’ servant leadership behavior, affective commitment, and job performance during the Covid-19 pandemic. Quality and Quantity, 57(1), 4657–4680. https://doi.org/10.1007/s11135-022-01568-6
39.
GhasemyM.SufeanH.Megat Ahmad KamaluddinM. D. (2016). Academic leadership capability framework: A comparison of its compatibility and applicability in Australia, New Zealand, and Malaysia. Asia Pacific Education Review, 17(2), 217–233. https://doi.org/10.1007/s12564-016-9425-x
40.
GhasemyM.TeeroovengadumV.BeckerJ.-M.RingleC. M. (2020). This fast car can move faster: A review of PLS-SEM application in higher education research. Higher Education, 80(6), 1121–1152. https://doi.org/10.1007/s10734-020-00534-1
41.
GocenA.SenS. (2021). A validation of servant leadership scale on multinational sample. Psychological Reports, 124(2), 752–770. https://doi.org/10.1177/0033294120957246
42.
GreenleafR. K. (1970). The servant as leader. The Greenleaf Center for Servant Leadership.
43.
GreenleafR. K. (2007). The servant as leader. In ZimmerliW. C.HolzingerM.RichterK. (Eds.), Corporate ethics and corporate governance (pp. 79–85). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-70818-6_6
44.
HeineE. C. E.StoutenJ.LidenR. C. (2023). Providing service during a merger: The role of organizational goal clarity and servant leadership. Journal of Business Ethics, 184(3), 627–647. https://doi.org/10.1007/s10551-022-05162-6
45.
HochJ. E.BommerW. H.DulebohnJ. H.WuD. (2018). Do ethical, authentic, and servant leadership explain variance above and beyond transformational leadership? A meta-analysis. Journal of Management, 44(2), 501–529. https://doi.org/10.1177/0149206316665461
46.
HollandP. W.WainerH. (1993). Differential item functioning. Lawrence Erlbaum Associates, Inc.
HortaH. (2022). Trust and incentives in academic research and the position of universities within innovation systems. Higher Education, 84(6), 1343–1363. https://doi.org/10.1007/s10734-022-00954-1
49.
HuJ.LidenR. C. (2011). Antecedents of team potency and team effectiveness: An examination of goal and process clarity and servant leadership. Journal of Applied Psychology, 96(4), 851–862. https://doi.org/10.1037/a0022465
50.
IrjalaO. (2024). Revisiting the concept of highly skilled professionals: An analysis of support staff in Finnish universities. Higher Education, 88(1), 361–379. https://doi.org/10.1007/s10734-023-01121-w
51.
IslamM. S.FujimotoY.HaqueA.UddinM. J. (2024). Responsible leadership in higher education in developing countries. Higher Education, 89(2), 465–485. https://doi.org/10.1007/s10734-024-01231-z
52.
KangT.ChenT. T. (2011). Performance of the generalized S-X2 item fit index for the graded response model. Asia Pacific Education Review, 12(1), 89–96. https://doi.org/10.1007/s12564-010-9082-4
53.
KlineR. B. (2023). Principles and practice of structural equation modeling (5th ed.). Guilford Publications.
54.
KreitchmannR. S.AbadF. J.PonsodaV.NietoM. D.MorilloD. (2019). Controlling for response biases in self-report scales: Forced-choice vs. psychometric modeling of Likert items. Frontiers in Psychology, 10(1), 1–12. https://doi.org/10.3389/fpsyg.2019.02309
55.
LidenR. C.PanaccioA.MeuserJ. D.HuJ.WayneS. J. (2014). Servant leadership: Antecedents, processes, and outcomes. In The Oxford handbook of leadership and organizations (pp. 357–379). Oxford University Press. https://doi.org/10.1093/oxfordhb/9780199755615.013.018
56.
LidenR. C.WayneS. J.MeuserJ. D.HuJ.WuJ.LiaoC. (2015). Servant leadership: Validation of a short form of the SL-28. The Leadership Quarterly, 26(2), 254–269. https://doi.org/10.1016/j.leaqua.2014.12.002
57.
LidenR. C.WayneS. J.ZhaoH.HendersonD. (2008). Servant leadership: Development of a multidimensional measure and multi-level assessment. The Leadership Quarterly, 19(2), 161–177. https://doi.org/10.1016/j.leaqua.2008.01.006
58.
MacfarlaneB. (2011). Professors as intellectual leaders: Formation, identity and role. Studies in Higher Education, 36(1), 57–73. https://doi.org/10.1080/03075070903443734
59.
MacfarlaneB.BoldenR.WatermeyerR. (2024). Three perspectives on leadership in higher education: Traditionalist, reformist, pragmatist. Higher Education, 88(4), 1381–1402. https://doi.org/10.1007/s10734-023-01174-x
MardiaK. V. (1974). Applications of some measures of multivariate skewness and kurtosis in testing normality and robustness studies. Sankhyā: The Indian Journal of Statistics, Series B (1960-2002), 36(2), 115–128.
62.
MariniG. (2024). Brexit and the War for Talents: Push & pull evidence about competitiveness. Higher Education, 88(4), 1629–1644. https://doi.org/10.1007/s10734-024-01186-1
MolenaarI. W.SijtsmaK.BoerP. (2000). MSP5 for windows: A program for Mokken Scale Analysis for polytomous items. IEC ProGAMMA.
67.
NahmF. S. (2022). Receiver operating characteristic curve: Overview and practical use for clinicians. Korean Journal of Anesthesiology, 75(1), 25–36. https://doi.org/10.4097/kja.21209
68.
OrlandoM.ThissenD. (2003). Further investigation of the performance of S- X2: An item fit index for use with dichotomous item response theory models. Applied Psychological Measurement, 27(4), 289–298. https://doi.org/10.1177/0146621603027004004
69.
OshagbemiT. (2000). Gender differences in the job satisfaction of university teachers. Women in Management Review, 15(7), 331–343. https://doi.org/10.1108/09649420010378133
70.
PaekI.ColeK. (2020). Using R for item response theory model applications. Taylor & Francis.
71.
PanaccioA.HendersonD. J.LidenR. C.WayneS. J.CaoX. (2015). Toward an understanding of when and why servant leadership accounts for employee extra-role behaviors. Journal of Business and Psychology, 30(4), 657–675. https://doi.org/10.1007/s10869-014-9388-z
72.
PengJ.-C.ChenS.-W. (2021). Servant leadership and service performance: A multilevel mediation model. Psychological Reports, 124(4), 1738–1760. https://doi.org/10.1177/0033294120950302
73.
PiedmontR. L. (2023). Social desirability bias. In MagginoF. (Ed.), Encyclopedia of quality of life and well-being research (p. 6526). Springer International Publishing. https://doi.org/10.1007/978-3-031-17299-1_2746
74.
PriceE. A. C.WhiteR. M.MoriK.LonghurstJ.BaughanP.HaylesC. S.GoughG.PreistC. (2021). Supporting the role of universities in leading individual and societal transformation through education for sustainable development. Discover Sustainability, 2(1), 49. https://doi.org/10.1007/s43621-021-00058-3
SamejimaF. (2016). Graded response models. In van der LindenW. J. (Ed.), Handbook of item response theory (Vol. 1, pp. 95–107). CRC Press. (Models).
77.
SendjayaS.EvaN.Butar ButarI.RobinM.CastlesS. (2019). SLBS-6: Validation of a short form of the servant leadership behavior scale. Journal of Business Ethics, 156(4), 941–956. https://doi.org/10.1007/s10551-017-3594-3
78.
SijtsmaK.van der ArkL. A. (2017). A tutorial on how to do a Mokken scale analysis on your test and questionnaire data. British Journal of Mathematical and Statistical Psychology, 70(1), 137–158. https://doi.org/10.1111/bmsp.12078
79.
SuddabyR. (2010). Editor’s comments: Construct clarity in theories of management and organization. Academy of Management Review, 35(3), 346–357. https://doi.org/10.5465/amr.35.3.zok346
80.
TabachnickB. G.FidellL. S. (2019). Using multivariate statistics (7th ed.). Pearson Education.
81.
TanP.-N. (2009). Receiver operating characteristic. In LiuL.ÖZsuM. T. (Eds.), Encyclopedia of database systems (pp. 2349–2352). Springer US. https://doi.org/10.1007/978-0-387-39940-9_569
82.
TassoneV. C.O’MahonyC.McKennaE.EppinkH. J.WalsA. E. J. (2018). (Re-)designing higher education curricula in times of systemic dysfunction: A responsible research and innovation perspective. Higher Education, 76(2), 337–352. https://doi.org/10.1007/s10734-017-0211-4
83.
Taylor-GillhamD. J. (1998). Images of servant leadership in education. Northern Arizona University.
84.
TimiyoA. J. (2016). Conceptualisation of the leading manager theory in higher education institutions: Insights from servant leadership. University of Huddersfield.
85.
TurnerK. (2022). Servant leadership to support wellbeing in higher education teaching. Journal of Further and Higher Education, 46(7), 947–958. https://doi.org/10.1080/0309877X.2021.2023733
86.
van der ArkL. A. (2012). New developments in Mokken Scale Analysis in R. Journal of Statistical Software, 48(5), 1–27. https://doi.org/10.18637/jss.v048.i05
van DierendonckD.NuijtenI. (2011). The servant leadership survey: Development and validation of a multidimensional measure. Journal of Business and Psychology, 26(3), 249–267. https://doi.org/10.1007/s10869-010-9194-1
89.
van DierendonckD.StamD.BoersmaP.de WindtN.AlkemaJ. (2014). Same difference? Exploring the differential mechanisms linking servant leadership and transformational leadership to follower outcomes. The Leadership Quarterly, 25(3), 544–562. https://doi.org/10.1016/j.leaqua.2013.11.014
WangC.NydickS. W. (2020). On longitudinal item response theory models: A didactic. Journal of Educational and Behavioral Statistics, 45(3), 339–368. https://doi.org/10.3102/1076998619882026
92.
WangZ.GuanC.CuiT.CaiS.LiuD. (2021). Servant leadership, team reflexivity, coworker support climate, and employee creativity: A multilevel perspective. Journal of Leadership & Organizational Studies, 28(4), 465–478. https://doi.org/10.1177/15480518211010769
93.
WheelerD. W. (2012). Servant leadership for higher education: Principles and practices. Wiley.
94.
WuE.BentlerP. M. (2013). EQSIRT – A comprehensive item response theory program. Multivariate Software, Inc. https://www.mvsoft.com/
95.
YaghiA. (2017). Adaptive organizational leadership style: Contextualizing transformational leadership in a non-western country. International Journal of Public Leadership, 13(4), 243–259. https://doi.org/10.1108/IJPL-01-2017-0001
YuanK.-H.LambertP. L.FouladiR. T. (2004). Mardia’s multivariate kurtosis with missing data. Multivariate Behavioral Research, 39(3), 413–437. https://doi.org/10.1207/S15327906MBR3903_2
98.
ZabalaK.CamposJ. A.NarvaizaL. (2022). Moving from a goods- to a service-oriented organization: A perspective on the role of corporate culture and human resource management. Journal of Business & Industrial Marketing, 37(6), 1197–1207. https://doi.org/10.1108/JBIM-11-2020-0497
99.
ZhangY.LiuS.AramburoC. A.JiangJ. (2023). Leading by serving: How can servant leadership influence teacher emotional well-being?Educational Management Administration & Leadership, 1(1), 17411432231182250–17411432231182624. https://doi.org/10.1177/17411432231182250
100.
ZhouG.GulR.TufailM. (2022). Does servant leadership stimulate work engagement? The moderating role of trust in the leader. Frontiers in Psychology, 13(1), Article 925732. https://doi.org/10.3389/fpsyg.2022.925732
101.
ZhouY.MiaoQ. (2014). Servant leadership and affective commitment in the Chinese public sector: The mediating role of perceived organizational support. Psychological Reports, 115(2), 381–395. https://doi.org/10.2466/01.21.PR0.115c23z4
102.
ZiaM. Q.DeciusJ.NaveedM.AhmedS.GhauriS. (2023). Committed, healthy, and engaged? Linking servant leadership and adaptive performance through sequential mediation by job embeddedness and burnout. Journal of Leadership & Organizational Studies, 30(3), 327–340. https://doi.org/10.1177/15480518231158861
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