A separate American diffusionist school of thought, led by Clark Wissler and Alfred Kroeber (both students of Boas), also arose in the first few decades of the twentieth century.
二十世纪的头几十年,美国也出现了一个相对独立的播学派,其领军物是ClarkWissler和AlfredKroeber(二者皆为Boas学生)。