Reference groups are actual or imaginary individuals or groups that influence a person's behavior, opinions, and purchases. Reference groups can influence consumers in three ways: informationally by providing product information and opinions; utilitarian by affecting what products are deemed socially acceptable or useful; and value-expressively by influencing the products that help a person feel admired or identify with a desired social group. Some reference groups have more influence than others depending on factors like whether a product is publicly or privately consumed and if it is a luxury or necessity item. Word-of-mouth communication is an important form of reference group influence, with negative word-of-mouth having a particularly strong impact on purchase decisions.
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