二十一世紀以來的國際發展援助議程益加強調援助有效性，如何確立援助過程中最後階段—政策到發展結果—的有效性，則與2015年 2019年與2021年諾貝爾經濟學獎得主，使用個體資料、應用因果推論方法、進行反事實分析緊密相關。本文回顧援助有效性的背景，介紹反事實分析的邏輯、方法，並透過訪談與文獻分析，檢視臺灣目前政府開發援助中，已獲學術期刊審查刊登的反事實分析案例，包括國際合作發展基金會在南太平洋島國吉里巴斯與馬紹爾群島的園藝計畫以及海地之糧食安全計畫。本文發現上述案例..

Since the beginning of the twenty-first century, the international development agendas have put more emphases on aid effectiveness. How to ensure the effectiveness from policies to development outcomes, the last stage of the aid process, is closely related to counterfactual analyses using micro-level data and causal inference techniques, recognized by Nobel Memorial Prizes in economics in 2015, 2019, and 2021. This paper reviews the background of aid effectiveness, introduces the logic and techniques of counterfactual analyses commonly used..

2016 年 1 月 6 日北韓進行第四次核試爆至 2017 年 9 月 3 日進行第六次核試爆，是北韓史上最密集發展核武及遠端投射能力的時期，這使美朝關係因此陷入年金正恩掌權以來最危險的時刻，雙方開戰傳言不斷。本文回顧這段期間的美朝戰略互動，發現雙方關係較貼近「螺旋模式」而非「嚇阻理論」假設。據此，若美朝對彼此「認知(perception)」無法調整，則雙方將因自我的不安全感無法解除，使對峙局面持續。而美朝關係能否走向緩解，關鍵不在美朝..

From January 6, 2016 to September 3, 2017, North Korea has executed three times of nuclear weapon testing, marking the highest frequency of testing in its history. As a result, this tension later built up the worst time of U.S.-North Korea relations after Kim Jong-un ruled the country. Because of this tension, there are a large number of reports that predict the U.S. will fight North Korea at any time. This research reviews the strategic interactions between U.S. and North Korea during that period, and then argues that the si..