A test of whether millet acreage in Niger is determined by official or private market prices
研究尼日尔两种谷物销售渠道（官方与私人市场）的价格对农民种植决策的影响，发现私人市场价格才是决定小米种植面积的关键因素。
Niger has two separate marketing channels for grain: one is the official system operated by the government; the other is a parallel channel of private traders. Researchers or policymakers wanting to study effects of price policies on producers are faced with two sets of prices. This paper seeks to answer the question, which prices matter? Non-nested hypothesis tests are conducted for millet-acreage response equations. The results show that prices from the larger private market are the prices that matter.