ABSTRACT
Ⅰ. Introduction
Ⅱ. Literature Review
2.1. Online Review & Review Helpfulness
2.2. Negativity Bias Theory
2.3. Factors Affecting Review Helpfulness
Ⅲ. Research Model and Hypotheses
3.1. Research Model
3.2. Hypotheses
Ⅳ. Research Methodology
4.1. Video Review Data
4.2. Operational Definition
Ⅴ. Data analysis and Results
5.1. The Principal Analysis Results
5.2. Validating the Robustness of Video Duration Analysis Results
Ⅵ. Discussion and Conclusion
6.1. Theoretical Implications
6.2. Practical Implications
6.3. Limitations and Future Research
Acknowledgments