A System Comparison Approach to Distinguish Two Nonseparable and Nonnested Agricultural Household Models
比较了两种不可分离的农业家庭模型，一种假设农场与非农场劳动异质且非农场劳动市场竞争，另一种假设两者同质且非农场劳动市场受限。通过Cox型检验对日本水稻农户数据进行分析，发现前者更优，并验证了价格弹性比较的重要性。
Abstract This study distinguishes two nonseparable agricultural household models for a self‐employed farm household. One assumes heterogeneity of farm and nonfarm labor and a competitive market for nonfarm labor. The other assumes homogeneity of the two types of labor and a restricted market for nonfarm labor. We compare demand systems that are derived from them, which have different dependent variables and different numbers of equations. We apply a Cox‐type test to compare these complicated nonnested systems. Results show clearly that the former is better for Japanese rice‐farming households. Comparison of price elasticities for those models verifies the importance of that test.