Which retail innovation, first introduced in 1916, fundamentally changed shopping psychology by allowing customers to select their own merchandise without clerk assistance?

The retail landscape has evolved dramatically throughout history, transforming how consumers interact with products and brands. This poll explores a pivotal moment in retail history that forever changed consumer psychology and shopping behaviors. Test your knowledge about one of the most significant retail innovations that shaped modern commerce and consumer culture.

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Self-service grocery stores (Piggly Wiggly)
Department store catalogs (Sears Roebuck)
Shopping malls (Country Club Plaza)
Charge cards (Bloomingdale's)