Which innovative retail technique, first widely implemented by department stores in the 1880s, revolutionized consumer psychology by making products more accessible to shoppers?

Long before e-commerce transformed retail, department stores revolutionized how people shopped. These 'cathedrals of commerce' fundamentally changed consumer psychology and shopping behaviors in ways that still influence modern retail strategy. Test your knowledge about a pivotal moment in retail history that laid the groundwork for today's shopping experiences.

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Self-service displays allowing customers to touch and examine merchandise without assistance
Loyalty card programs that rewarded repeat customers with exclusive discounts
Seasonal sales events that created artificial urgency through limited-time offerings
Store credit systems that allowed customers to purchase without immediate payment