臺大管理論叢 NTU Management Review VOL.29 NO.1

39 NTU Management Review Vol. 29 No. 1 Apr. 2019 6. Conclusion and Future Research 6.1 Discussion This study illustrated a research model for the exploration of antecedents influencing supplier’s hoarding intention in a disrupted supply chain after a disaster, including the moderating effects of regime intervention, the supplier’s attitude towards weakened operational shock-wave after disaster, the supplier’s belief in future earnings, and the perceived relationship quality in its main business partner. To further address this issue, we should briefly review the related literature, such as theory of reasoned action (TRA), contingent sourcing problem, social cognitive theories, etc. News reports of natural disasters led us to become concerned about selfish behaviors in human beings, which may impede the recovery of disrupted grain supply chains. Opportunistic behavior is observed normally after severe disasters in the grain supply chain. The results of this study show there indeed are some reasons which may cause this phenomenon to exist in the post- disaster supply chain. All in all, linking this opportunistic behavior with the proposed model is the main contribution this paper makes. Considering the natural behaviors of humans, these economically advantageous activities people engage in are not surprising. Additionally, this behavior can be moderated by the regime in our experiment results. In Taiwan's grain supply chains, the supplier’s belief in future earnings and the perceived relationship quality in main business partner are significantly and negatively influenced in supplier hoarding intention. Then, the supplier attitude towards weakened operational shock-wave after disasters positively affects the supplier hoarding intention. These findings are in accordance with Ajzen (1991), who states that both perception of behavioral outcomes and behavioral beliefs can affect attitudes, which affects the intention to perform the behavior. In grain supply chains, the supplier’s intention to perform hoarding behavior is influenced by several rational reasons, the benefit of earning more, the avoidance of stock shortage, relationship commitment, mutual trust, mitigation of the risk of business disruption, the desire to reduce costs associated with broken contracts, etc. We also find that regimes adopt policies to prevent the supplier’s hoarding intentions, which complies to the findings of Riethmuller and Roe (1986). To stabilize the prices post-disaster, regimes implement many kinds of policies. We discussed three factors mentioned in Yang et al. (2008), shown in Appendix A. Finalized Questionnaire Items. Finalized questionnaire items. These policies have a significant moderating effect on the supplier’s hoarding intentions.