Extensive versus Intensive Agricultural Development: Induced Public Investment in Southeast Asia, 1900–1940
研究发现，当灌溉比开垦新地成本更低时，东亚和东南亚会进行灌溉投资，但泰国因国家安全与经济发展目标分歧以及公私利益冲突，将投资推迟了几十年。
Kikuchi and Hayami found that irrigation investments were undertaken in East and Southeast Asia when the costs of increasing output through irrigating were lower than through bringing more land under cultivation. In Thailand, however, despite the lower costs of irrigation, the investments were postponed for several decades. The delay was due to a divergence between national security and economic development goals and to a conflict of private versus public interests. The results highlight the importance of the returns to decision makers in determining the amount and timing of public investments.