Transaction Costs, Information Technologies, and the Choice of Marketplace among Farmers in Northern Ghana
基于加纳农民的交易数据，研究手机和收音机等信息技术如何影响农民的市场选择，发现更广的市场信息可能增强农民在本地市场的议价能力，而非促使他们去更远的市场。
Using a transactions costs framework, we examine the impact of information and communication technologies (mobile phones and radios) use on market participation in developing country agricultural markets using a novel transaction-level data set of Ghanaian farmers. Our analysis of the choice of markets by farmers suggests that market information from a broader range of markets may not always induce farmers to sell in more distant markets; instead farmers may use broader market information to enhance their bargaining power in closer markets. Finally, we find weak evidence on the impact of using mobile phones in attracting farm gate buyers.