A test of whether millet acreage in Niger is determined by official or private market prices
尼日尔谷物有官方和私人两个销售渠道，本文通过非嵌套假设检验发现，私人市场价格才是影响农民小米种植面积的关键因素。
ABSTRACT 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 policy‐makers 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.