Information, efficiency, and welfare in agricultural markets
讨论了信息通信技术（特别是手机）如何通过改善套利效率、减少信息不对称和市场势力，影响发展中国家农产品市场的福利，并回顾了相关实证证据。
Abstract Information and communications technologies (ICTs) have spread rapidly in the developing world. There has been considerable interest in the potential role ICTs, particularly mobile phones, have begun to play in the marketing of agricultural outputs in these countries. In this article, we discuss the potential impacts ICTs may have on welfare, both in terms of potential efficiency gains (via improved arbitrage), and welfare transfers among agents in the supply chain (via reduced informational asymmetries and market power). We also review the recent empirical evidence for such effects.