TECHNOLOGY, POLICY DISTORTIONS, AND THE RISE OF LARGE FARMS
研究了1900至2002年间美国农场规模增长三倍的现象，发现农业政策补贴偏向大型农场是导致其主导地位上升的关键因素，但对就业和生产率影响不大。
Abstract Between 1900 and 2002, mean farm size in the United States tripled; productive resources were increasingly concentrated in large farms. These observations are difficult to explain as results of profit maximization by farmers in a frictionless equilibrium model, given exogenous factor endowment and technology. I show that notable shifts in the farm size distribution coincided with important changes in farm legislation and that farm programs provided larger farms more subsidy per dollar of output produced. These farm‐level distortions are crucial for the increasing dominance of large farms but have little impact on employment and productivity in agriculture.