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α: calibrated so average coauthorship-adjusted count equals average raw count
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.