Is the United States Really Underinvesting in Agricultural Research?
质疑美国农业研究公共投资不足的普遍观点，指出以往证据存在两个局限：比较对象不当和低估税收成本，考虑这些因素后支持投资不足的证据大为削弱。
Abstract That the level of public investment in U.S. agricultural research is too low is widely accepted. This paper argues that there are two important limitations to the evidence assembled in support of the underinvestment hypothesis: ( a ) many authors have compared the social rate of return to public investments with the private rate of return to private investments; ( b ) costs of public expenditures on agricultural research have been underestimated by a failure to account for the marginal excess burden of the tax collection system. Taking these two factors into account, evidence in support of the underinvestment hypothesis is weakened considerably.