PRODUCT MARKET DISTORTIONS AND THE RETURNS TO BROILER CHICKEN RESEARCH IN CANADA
用经济剩余法估算1968-1984年加拿大联邦肉鸡研究的回报率（52%-60%），发现产品市场扭曲和税收负担影响收益分配，所有好处归消费者，生产者反而受损。
The economic returns to Canadian federal broiler chicken research between 1968 and 1984 were estimated using the economic surplus approach. The impact of distortions in the product market and of the excess burden of taxes on the net benefits of research and the distribution of gross benefits between producers and consumers were assessed. Rates of return to research investments at the margin over this period were estimated to be between 52% and 60%. All of the benefits of this research have accrued to consumers, and producers have actually been made worse off by broiler research under the existing regime of supply management.