Which customer feedback innovation, invented in 1950, revolutionized product development by allowing companies to systematically collect consumer opinions through structured questionnaires?

Before digital surveys and online review platforms transformed how companies collect customer feedback, product improvement relied on much more primitive methods. This trivia question explores a groundbreaking invention that revolutionized how companies gathered consumer insights and significantly impacted product development strategies in the mid-20th century. Test your knowledge about this pivotal development in market research history!

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• The Focus Group (led by sociologist Robert K. Merton)
• The Product Satisfaction Index (PSI) created by Alfred Sloan at General Motors
• The Consumer Response Card system developed by Procter & Gamble
• The Retail Feedback Terminal invented by IBM for department stores

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