Which retail innovation, invented in 1916 by Clarence Saunders, first allowed customers to select their own merchandise without clerk assistance, revolutionizing consumer shopping psychology?

The invention of self-service shopping transformed retail consumer psychology forever. Before this revolutionary concept, customers relied on clerks to retrieve products from behind counters, limiting product discovery and impulse purchases. This innovation fundamentally changed the customer journey and shopping behavior, creating the foundation for modern retail experiences we know today. Test your knowledge about this pivotal retail invention that changed consumer behavior patterns worldwide!

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Piggly Wiggly (the first true self-service grocery store)
The Shopping Cart (invented by Sylvan Goldman)
The Barcode Scanner (invented by Norman Woodland and Bernard Silver)
The Department Store (pioneered by Aristide Boucicaut with Le Bon Marché)