We tested four alternative hypotheses concerning the motivations behind the participation by rural households in community work: public goods investment, production network formation, risk‐sharing network formation, and pure altruism. We used a unique dataset from an irrigation project in Sri Lanka under a natural experimental situation where a significant portion of irrigated land was allocated through a lottery mechanism. In addition, we elicited the level of altruism using the dictator game. By combining these data, we showed that community participation patterns fit the motive to form risk‐sharing networks better than the other major motives. Only a few studies have empirically investigated the process of risk‐sharing network formation, and our analysis fills the gap in the literature.

中文翻译：

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社区参与的动机：来自斯里兰卡自然和人工人工田间实验的证据

我们测试了关于农村家庭参与社区工作动机的四个假设：公共物品投资，生产网络的形成，风险分担网络的形成和纯利他主义。在自然实验情况下，我们通过斯里兰卡的一个灌溉项目使用了一个独特的数据集，其中很大一部分灌溉土地是通过抽奖机制分配的。此外，我们使用独裁者游戏得出了利他主义的水平。通过合并这些数据，我们发现社区参与模式比其他主要动机更适合形成风险分担网络的动机。只有很少的研究从经验上研究了风险共享网络形成的过程，而我们的分析填补了文献中的空白。