本篇文的目的是評估日本、挪威、臺灣與美國消費者，對基因改造（genetically modified，GM）食品的願付金額（willingness to pay，WTP）。這些國家對gm食品的態度與認知程度的有顯著差異。相較於挪威人、日本人與臺灣人，美國人消費GM食品的意願較高。?四個四國家的調查結果發現，大多數的受訪者支持GM食品需有強制性之說明。而美、日本、挪威與臺灣的學生分別願意支付50-62％、33-40％、55-69％與17-21％的額外費用，以購買非GM植物油。此外，為避免GM替代品的WTP評估結果顯示，對於挪威消費而言，平圾對GM大豆沙拉油、餵食GM飼料之鮭魚與GM鮭魚等產品之需求價格，分別要比傳統的替代品低55％、54％與67％。

　　　　　The objective of this paper is to estimate the consumer willingness to pay (WTP) for genetically modified (GM) foods in Japan, Norway, Taiwan, and the U.S. There are notable differences in the attitudes and perception of GM foods across countries. Americans are more willing to consume GM foods than Norwegians, Japanese and Taiwanese. A majority of respondents in all surveys supports mandatory labeling of GM foods. The students in the U.S., Japan, Norway, and Taiwan are willing to pay premiums of 50-62%, 33-40%, 55-69% and 17-21%, respectively, for non-GM vegetable oil. The WTP values for avoiding the FM alternative indicate that the average Norwegian consumer demands price reductions of 55%, 54%, and 67% for GM soybean oil, GM-fed salmon, and GM salmon as compared with the conventional alternatives.