Model

χ²/df

RMSEA

CFI

NFI

IFI

TLI

Psychological contract

2.80

0.07

0.95

0.93

0.95

0.94

Reciprocal preference

2.65

0.07

0.94

0.95

0.93

0.97

Knowledge sharing willingness

1.68

0.04

0.93

0.94

0.94

0.95

Optimal value tendency

<3

<0.08

>0.9

>0.9

>0.9

>0.9