本文目的為探討影響東南亞七個經濟體(台灣、香港、及東南亞國協五國─馬來西亞、新加坡、印尼、菲律賓、泰國)在國際旅遊觀光市場之相對競爭力的因素及利用國際旅遊觀光統計資料，透過三階段最小平方法(3SLS)及迴歸分析，分別針對東南亞七個經濟體，探究相對價格、匯率及供給面變數，對其主要來源國家觀光客─美國、日本做實證分析。實證結果發現：(1) 如果旅遊目的為商務或探親，或者是以觀光團型態旅遊，則國際觀光客對於相對價格變動並不敏感。(2) 如果大部分在目的地國家的旅遊支出是以來源國家貨幣計價，則國際觀光客對於匯率變動並不敏感。(3) 供給面因素的確對經濟體之國際旅遊觀光市場佔有率具有決定性影響，然而其影響視來源國與各目的地國家之相關性而定。

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