Claude Hopkins (1866–1932) was an American advertising pioneer who founded copywriting as an empirical practice — tested, measured, and accountable to results. His Scientific Advertising (1923) remains foundational to direct-response copywriting.

Core ideas

  • Advertising as science: Hopkins insisted that advertising should be tested and measured, not left to intuition. He used coupon codes, keyed advertisements, and split runs (different ads in different regions of the same publication) to determine which headlines, offers, and appeals produced responses — a practice that anticipated modern B testing by nearly a century [@hopkins1923].
  • Write about the reader, not the product: Hopkins argued that effective copy addresses the reader’s problem, not the product’s features. “The best ads ask no one to buy. They do not even quote a price. They do not say that a product is cheap or economical. They just point out the advantages users will gain.”
  • Specificity over generality: Hopkins demonstrated that specific claims (“This beer is aged for 1,200 hours”) outperform vague ones (“This is the best beer”) — even when the specific claim describes a standard process. Specificity creates the impression of expertise and transparency.

Notable works

  • Scientific Advertising (1923)
  • My Life in Advertising (1927)
  • copywriting — the discipline Hopkins helped formalize
  • B testing — Hopkins’s core method, now digital
  • headline — Hopkins tested headlines systematically