Ontario Agriculture in Transition: The Switch from Wheat to Cheese
挑战传统观点，认为北美东部农民从小麦转向混合农业并非因相对成本变化，而是为了降低风险，并验证了农民愿以更高预期收入换取更稳定收入的假设。
This paper rejects the traditional interpretation that farmers shifted from wheat to mixed farming in eastern North America because of changes in relative costs. It argues instead that they shifted because mixed farming involved less risk. We test the proposition that farmers were willing to give up a larger expected income in wheat production for a smaller but more stable income in mixed farming. The results are consistent with our hypothesis.