Six items measure the social-adjustive functional base of product attitude—the degree to which owning and using a product helps the consumer to fit in, gain approval, and signal social identity.
Grewal, R., Mehta, R., & Kardes, F. R. (2004). The timing of repeat purchases of consumer durable goods: The role of functional bases of consumer attitudes. Journal of Marketing Research, 41(1), 101–115.
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