In 1929, which revolutionary advertising technique did Ernest Dichter pioneer that fundamentally changed how products were marketed to consumers?

Throughout history, product advertising has evolved dramatically, with some campaigns completely revolutionizing how companies connect with consumers. This trivia focuses on a groundbreaking early 20th century advertising innovation that transformed product marketing and consumer behavior. Test your knowledge of marketing history and see if you can identify this pivotal moment that shaped modern advertising approaches.

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Motivational Research (psychological marketing)
Billboard standardization
Radio jingles
Door-to-door sales scripts