Title Page
Contents
국문초록 10
ABSTRACT 13
Chapter 1. Introduction 17
1.1. Background and purpose 17
1.1.1. Research background 17
1.1.2. Research purpose 22
1.2. Research methods and contents 24
1.2.1. Research methods 24
1.2.2. Research contents 25
Chapter 2. Literature Review 28
2.1. Ethical leadership 28
2.1.1. The definition of ethical leadership 28
2.1.2. Previous research on ethical leadership 31
2.2. Innovative work behavior 32
2.2.1. The definition of innovative work behavior 32
2.2.2. Previous research on innovative work behavior 37
2.3. Psychological safety 42
2.3.1. The definition of psychological safety 42
2.3.2. Previous research on psychological safety 44
2.4. Work engagement 47
2.4.1. The definition of work engagement 47
2.4.2. Previous research on work engagement 49
Chapter 3. Research Model and Hypotheses 52
3.1. Research model 52
3.2. Research hypotheses 52
3.2.1. Ethical leadership and innovative work behavior 52
3.2.2. Psychological safety as a mediator 54
3.2.3. Work engagement as a mediator 57
3.2.4. Psychological safety and work engagement as a serial mediators 59
Chapter 4. Research Methodology 62
4.1. Research sample 62
4.1.1. Sample and procedure 62
4.1.2. Sample characteristics 62
4.2. Measures 64
4.2.1. Ethical leadership 64
4.2.2. Work engagement 65
4.2.3. Psychological safety 66
4.2.4. Innovative work behavior 67
4.2.5. Control variables 68
4.2.6. Questionnaire design 69
4.3. Statistical Analysis 71
Chapter 5. Research Results 72
5.1. Reliability analysis 72
5.2. Validity analysis 73
5.2.1. Exploratory factor analysis 75
5.2.2. Common method bias testing 77
5.2.3. Confirmatory factor analysis 78
5.3. Hypothesis Testing 83
5.3.1. Hypothesis testing the main effect 86
5.3.2. Hypothesis testing the mediating effect of psychological safety 89
5.3.3. Hypothesis testing the mediating effect of work engagement 93
5.3.4. Hypothesis testing the serial mediating effect 98
5.3.5. Summary of hypothesis testing results 99
Chapter 6. Conclusion 101
6.1. Research conclusions 101
6.2. Research implications 104
6.2.1. Theoretical implications 104
6.2.2. Practical implications 106
6.3. Research limitations and future research 108
Reference 111
Appendix 134
〈Table 4-1〉 The sample characteristics (N=429) 63
〈Table 4-2〉 Measurement of ethical Leadership 65
〈Table 4-3〉 Measurement of work engagement 66
〈Table 4-4〉 Measurement of psychological safety 67
〈Table 4-5〉 Measurement of innovative work behavior 68
〈Table 4-6〉 Measurement of control variables 69
〈Table 4-7〉 Composition of questionnaire 70
〈Table 5-1〉 Reliability of variables 73
〈Table 5-2〉 Overall KMO and Bartlett's test 74
〈Table 5-3〉 Exploratory factor analysis of variables 76
〈Table 5-4〉 Convergent validity for each variable 81
〈Table 5-5〉 Model fit of confirmatory factor analysis 82
〈Table 5-6〉 Results of discriminant validity analysis 83
〈Table 5-7〉 Model fit of structural equation 84
〈Table 5-8〉 The path analysis (RC→IG) 86
〈Table 5-9〉 The path analysis (RC→IE) 86
〈Table 5-10〉 The path analysis (PS→IG) 87
〈Table 5-11〉 The path analysis (PS→IE) 87
〈Table 5-12〉 The path analysis (RC→PS) 89
〈Table 5-13〉 The path analysis (PS→PS) 90
〈Table 5-14〉 The path analysis (PS→IG) 90
〈Table 5-15〉 The path analysis (PS→IE) 91
〈Table 5-16〉 Results of the mediation effect test 92
〈Table 5-17〉 The path analysis (RC→WE) 93
〈Table 5-18〉 The path analysis (PS→WE) 94
〈Table 5-19〉 The path analysis (WE→IG) 95
〈Table 5-20〉 The path analysis (WE→IE) 96
〈Table 5-21〉 Results of the mediation effect test 96
〈Table 5-22〉 The path analysis (PS→WE) 98
〈Table 5-23〉 Results of the serial mediation effect 99
〈Table 5-24〉 Combined hypothesis test results 100
〈Figure 3-1〉 The research model 52