過去有許多文章討論與對外直接投資相關的議題，本論文則是針對並剖析對外直接投資與訊息不對稱、市場進入模式和研究發展的關聯性，藉以彰顯對外直接投資在各個議題中的重要性。上述三個議題，本論文是由三篇相互獨立的文章所組成分別為本文的第二章至第四章。接下來，我們將這三個不同議題所探討的主要內容分別簡述如下。第2章不對稱訊息與最適外人直接投資課稅政策：本章認為跨國廠商的對外直接投資，就地主國政府而言，吸引跨國廠商前來直接投資有許多可能的好處，最主要不外是希望獲取跨國廠商的技術，或是藉以創造就業機會。而地主國政府對外人直接投資課稅政策的制定，將同時影響兩國的廠商與政府。但是事實上，地主國政府對於跨國廠商的成本高低經常不具完全訊息，導致地主國政府可能使用錯誤的課稅政策，進而影響地主國的福利水準。故地主國政府，應如何在跨國廠商的成本為私訊息時，選擇一適當的課稅政策以兼顧稅收與就業，來追求福利的極大，是本章想討論的主要議題。第3章跨國廠商進入市場模式選擇：當跨國廠商考慮進入地主國市場時，通常面臨該以何種方式進入地主國市場的問題。對跨國廠商而言，在各種不同進入模式下有不同的優點與限制，並對兩廠商未來的關係與發展有相當程度的影響。因此，跨國廠商應如何選擇一個對其最合適且有利的市場進入模式進入地主國市場，這將是本章想探討的議題。第4章對外直接投資與研究發展：若是投資地主國較低廉的工資水準而吸引了跨國廠商的直接投資，在這樣的情況下，跨國廠商的直接投資究竟會不會影響其技術提升的誘因，因為在這樣的趨勢下，產業空洞化、失業問題等對經濟所造成的影響將不容忽視，正是本章想欲探討的議題。 This paper is about FDI. And it is to compose with three papers. One is about of uncertainty. The purpose of this paper is to examine when foreign firm has cost uncertainty then host government should make separating or pooling tax policy. Then the two of this paper is to examine when foreign firms want to entry host country what is the best entry mode. And foreign firms entry mode can FDI、export or licensing. The last of this paper is purpose of this paper is to examine whether a lower labor cost in the host country will negatively affect a multinational firm’s R&D investment. An imperfectly competitive market structure and a production function with labor and technology inputs are utilized in this paper. The main findings in this paper are as follows. (1) If labor and technology were complementary inputs, the multinational firm will increase its R&D investment as it invests outward. (2) If labor and technology were substitute inputs, the impact of outward direct investment on multinational firm’s R&D investment is ambiguous. It is shown that the lower the host country’s wage or the larger the market size, it is more likely that the multinational firm’s R&D investment will decrease due to outward direct investment. (3) In the case that a host country’s firm also invests in R&D, its R&D investment will decrease while facing a foreign direct investment as labor and technology are complementary. On the contrary, as labor and technology are substitute, the host firm’s R&D investment may increase while facing a foreign direct investment.
