| Summary: | 碩士 === 國立臺灣大學 === 土木工程學研究所 === 96 === The subject of this research is mainly about the organization decision-making. The government kept supporting THSRC in the construction process of THSR, but THSR didn’t upturn because of that. Bad news still came out again and again. Staw & Ross addressed the model of escalation of commitment in 1986. It said that after a series of actions, the policy-maker will insist in the decision he made before even though facing the disadvantageous situation. He will be the possibility of turning the situation around by investing further time, money, or effort. The major elements that affect escalation of commitment are project determinants, psychological determinants, social determinants, organizational determinants, and contextual determinants. Each element contains several variables. Some of these variables increase the level of escalation of commitment and some of them make it decreased. This research discusses if the escalation of commitment addressed by Staw & Ross（1986） can explain the policy-making that the government decided to support THSRC, by using case studying. The information comes from the documents that Executive Yuan reply to the supervision departments and mass media reports. The data shows those five elements affecting the escalation of commitment all appeared in the case of THSR even though not all variables did. This research also proposes five suggestions to avoid escalation of commitment.
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