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Trickle-down effect
The trickle-down effect is a model of product adoption in marketing that affects many consumer goods and services.
It states that fashion flows vertically from the upper classes to the lower classes within society, each social class influenced by a higher social class. Two conflicting principles drive this diffusion dynamic. Lesser social groups seek to establish new status claims by adopting the fashions of higher social groups in imitation, whilst higher social groups respond by adopting new fashions to differentiate themselves. This provokes an endless cycle of change, driving fashion forward in a continual process of innovation.
Due to this dynamic, initially a product may be so expensive that only the wealthy can afford it. Over time, however, the price will fall until it is inexpensive enough for the general public to purchase.
== History and Evolution of the Term ==
The trickle down theory has been modified greatly from the Veblen-Simmel model, produced at the turn of the 19th Century, to date. However, it provides an overall theory of how novelty is first introduced then disseminated throughout society.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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