| Scale name | Cronbach’α | The number of items |
| Total questionnaire | 0.89 | 26 |
| Transactional psychological contract | 0.75 | 3 |
| Relational psychological contract | 0.83 | 5 |
| Developmental psychological contract | 0.85 | 4 |
| Reciprocal motivation | 0.84 | 3 |
| Reciprocal behavior | 0.79 | 3 |
| Explicit knowledge sharing willingness | 0.85 | 4 |
| Tacit knowledge sharing willingness | 0.72 | 4 |