Table 1 Results of exploratory factor analyses

Servant leadership

(Cronbach’ s alpha = 0.836)

SL 1

0.813

SL 2

0.799

SL 3

0.809

SL 4

0.786

SL 5

0.775

SL 6

0.847

SL 7

0.810

Role identity

(Cronbach’ s alpha = 0.874)

RI 1

0.797

RI 2

0.796

RI 3

0.824

RI 4

0.835

RI 5

0.799

RI 6

0.869

PSM

(Cronbach’ s alpha = 0.821)

PSM 1

0.870

PSM 2

0.713

PSM 3

0.797

PSM 4

0.807

PSM 5

0.805

PSM 6

0.830

PSM 7

0.879

PSM 8

0.841

PSB

(Cronbach’ s alpha = 0.866)

PSB 1

0.861

PSB 2

0.815

PSB 3

0.866

PSB 4

0.886

Eigenvalue

8.424

2.289

1.965

1.792

% of variance

33.696

9.154

7.859

7.167

% of cumulative

33.696

42.851

50.710

57.877

KMO = 0.911, Bartlett (χ² = 4910.010, df = 300, p = 0.000)