法國與臺灣的政府體制都屬於半總統制，法國的憲政經驗中曾出現過三次的「左右共治」，臺灣的憲政經驗中卻從未出現過「藍綠共治」，何以如此?這是本文欲探討的課題。本文藉助賽局理論作為分析工具，探討制度安排如何影響行動者間的策略互動，以致最後產生了共治與否的差異。法國與臺灣擁有不同的選舉制度和不同的國會保障機制，在兩種制度因素的交互作用下，會引導分屬不同政黨陣營的總統和國會多數產生不同的政治計算與策略互動，最終導致法國出現「左右共治」，臺灣卻沒有出現「藍綠共治」。 ..

Both France and Taiwan’s political systems are semi-presidential. However, “cohabitation” in French constitutional experience has occurred three times while Taiwan has never seen “cohabitation” until now. Finding the reason for this difference is the central question of this paper. By using the game theory as an analysis tool, the paper explores how the institutional design influences the actors’ strategic interactions, which underlies the discrepancy between France and Taiwan in “coh..

在國際關係理論中，以主權國家為前提，以理性選擇為途徑，這種採用國家是單一理性行為體的假設，在解釋國際合作與否時，已經面臨到一些挑戰，換言之，非國家行為體亦扮演重要角色。另外，由新現實主義和新自由主義共同假定的制度結構，在日趨複雜的現實世界中，也不能完全理解真實國際社會合作發生的原因。因此，本文嘗試引用認知理論，藉共同認知變項的提出，並結合共同利益變項，透過整合制度結構和認知轉化的過程，導出一種國際合作框架。在驗證部份，本文採用賽局理論和列舉實際案例，說明制度..

In international relations, some theories explain international cooperation almost solely based on sovereign states and a presumed approach of rational choice. However, these hypotheses assume a state-actor, as a rational unit, will meet some unforeseen challenges, thus we need a non-state actor as another variable. Furthermore, an institutional structure of neo- realism’s and neo-liberalism’s hypothesis do not fully illustrate how international cooperation occurs in the real world. So we adopt both the cognitive ..