In Vietnam, the airline service sector plays an important economic role. However, it is a complicated industry that is open to failures. Negative emotions are an essential variable for the airline service industry because they can trigger a variety of coping behaviors that affect consumer loyalty as well as the image and reputation of the airline service providers. However, negative emotions and the accompanying coping behaviors are often investigated partially or as separate issues, thus leading to an incomplete understanding. This study is conducted to fill this gap by proposing and testing the causal relationship between negative emotions (anger, frustration, regret) and coping behaviors (complaint, negative word-of-mouth (WOM), and switching intention) in the context of the airline industry. Eight research hypotheses are tested. Using the partial least squares structural equation modeling (PLS-SEM) on a sample of 587 passengers in Vietnam, the empirical results show that anger and frustration influence complaints, negative WOM, and switching intention, while regret leads to switching intention and negative WOM. Thus, the research has important academic and practical implications. The empirical outcome could be of major importance for airline companies in planning to provide new services and achieve high performance in the long run.

Abstract
1. Introduction
2. Literature Review
    2.1. The Cognitive Appraisal Theory
    2.2. A Summary of Experimental Studies
3. Data Collection and Methodology
    3.1. The Scale
    3.2. Data Collection Procedure and Methodology
4. Empirical Results and Discussion
    4.1. Empirical results
    4.2. Discussion
5. Conclusion and Administrative Implications
    5.1. Conclusion
    5.2. Administrative Implications
References

• Canh Chi HOANG(Faculty of Business Administration, University of Finance – Marketing, Ho Chi Minh City) Corresponding Author