Speech is the cheapest, most convenient, earliest use type of communication; it has been an important tool in the transformation of man into a social animal. Therefore, it has an extraordinarily intimate relationship with social relations.
口頭傳播是人類最廉價、最方便以及使用最早、最久的交往方式，也是將人類「化」為社會動物的主要工具，因此，口頭傳播與社會的關係就格外密切了。