所谓话题设计（ａｇｅｎｄａｓｅｔｔｉｎｇ）理论是７０年代在美国出现的，主要强调的是媒体的社会影响。一般把话题或议题分为媒体、公众和政府三部分，特别强调媒体的话题设计对于公众的影响。美国学术界普遍承认在国际事务上，政府（包括联邦政府和国会）的议题设计对于媒 The so-called theory of topic design (agendasetting) emerged in the United States in the 1970s, with the emphasis on the social impact of the media. The topic or topic is generally divided into media, the public and the government in three parts, with particular emphasis on the media’s topic design for the public. It is generally accepted by the academic community in the United States that in international affairs, the design of the government (including the federal government and the parliament)