Design rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
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Apply David Ogilvy's advertising principles when writing or reviewing copy, headlines, product descriptions, landing pages, ads, emails, or any persuasive text. Use when the goal is copy that sells, not copy that wins awards. Covers positioning, headlines, promises, brand voice, long-form copy, and visual logic. Source: How to Create Advertising That Sells (1972) + Ogilvy on Advertising.
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Apply these principles when writing, reviewing, or critiquing any copy with a sales or persuasion goal. Advertising is not art. It is information in service of selling. Every decision should serve that end.
Ogilvy's framework operates in order of priority. Later decisions only matter if earlier ones are correct.
Positioning is not a tagline. It is the answer to two questions: what does this product do, and who is it for?
The entire campaign depends on this decision being made first, before any copy is written.
Wrong positioning means every downstream decision is built on a broken foundation. Research helps. Decide it early. Lock it in before writing a word.
Psychological segmentation beats demographic segmentation. Any agency can target "women 25-45." The better move is targeting a mindset — people who believe X, who reject Y, who want to feel Z.
A promise is not a claim, slogan, or theme. It is a specific benefit the consumer will receive.
Samuel Johnson: "Promise, large promise, is the soul of an advertisement."
Rules for the promise:
Go the whole hog. Most campaigns try to say too many things. They reflect too many executives, too many objectives. Boil the strategy down to one promise and deliver it completely. Attempting too many things achieves nothing.
Every ad contributes to the brand's cumulative identity. 95% of advertising is created ad hoc, with no consistent image from year to year. That is waste.
The manufacturer who builds a sharply defined brand personality over time gets the largest market share.
Quality signals quality. If the advertising looks ugly, consumers conclude the product is shoddy.
Unless the advertising is built on a big idea, it will pass like a ship in the night.
A big idea jolts the consumer out of indifference. It makes them notice, remember, and act.
Big ideas are almost always simple. Charles Kettering (General Motors): "This problem, when solved, will be simple."
Big ideas are not easy. They require research, preparation, and time. A truly strong one can run for 20 years — Ogilvy's eye patch for Hathaway shirts ran unchanged for decades.
How to find the big idea:
Five times as many people read the headline as read the body copy. Waste the headline and you waste 80% of the money.
Rules:
These apply to video ads, social video, and promotional content.
There is no correlation between creative awards and sales. The pursuit of awards pulls creative attention away from the goal. Successful advertising sells the product without drawing attention to itself. The product is the hero — not the ad.
Advertising that follows fashionable fads or imitates competitors is rarely successful. Innovate. Start trends rather than following them. But pre-test innovation before committing.
Nobody has ever been bored into buying anything. Detached, cold, impersonal advertising fails. Involve the consumer. Talk like a human. Make them feel something.
New products deserve loud launches. Many copywriters instinctively bury news in the body copy or hedge the announcement. The moment of newness is the single easiest moment to generate interest. Use it.
One strategy. One promise. One idea. Complexity is how committees dilute advertising into nothing.
Before writing, answer these:
| Element | What wins |
|---|---|
| Positioning | Psychological over demographic |
| Promise | Specific benefit, not a slogan |
| Headline length | 8-12 words for recall; 6-12 for response |
| Headline content | Brand + promise + news |
| Copy length | Long beats short for interested buyers |
| Visuals | Photos over illustrations |
| Layout | Editorial over "addy" |
| Video opening | Strong/exciting, not quiet |
| Video narration | On-camera over voiceover |
| Testimonials | Credible and relevant |
| Music | Reduces recall — use sparingly |
| Repetition | Run winners longer than feels comfortable |
| Tone | Human, specific, intelligent |
| Complexity | One promise, executed completely |
Adapted from:
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概要と使いどころ
Design rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
日本語の概要は準備中です。原文の説明を表示しています。
When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test two versions," "statistical significance," "how long should I run this test," "growth experiments," "experiment velocity," "experiment backlog," "ICE score," "experimentation program," or "experiment playbook." Use this whenever someone is comparing two approaches and wants to measure which performs better, or when they want to build a systematic experimentation practice. For tracking implementation, see analytics. For page-level conversion optimization, see cro.
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Format CVs for academic positions with publications, grants, and teaching
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Conduct a comprehensive accessibility audit against WCAG guidelines with severity ratings and remediation steps.
日本語の概要は準備中です。原文の説明を表示しています。
Create accessibility testing plans covering assistive technologies and WCAG criteria.
日本語の概要は準備中です。原文の説明を表示しています。
When the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary text, or full ad variations — for any paid advertising platform. Also use when the user mentions 'ad copy variations,' 'ad creative,' 'generate headlines,' 'RSA headlines,' 'bulk ad copy,' 'ad iterations,' 'creative testing,' 'ad performance optimization,' 'write me some ads,' 'Facebook ad copy,' 'Google ad headlines,' 'LinkedIn ad text,' or 'I need more ad variations.' Use this whenever someone needs to produce ad copy at scale or iterate on existing ads. For campaign strategy and targeting, see ads. For landing page copy, see copywriting.
日本語の概要は準備中です。原文の説明を表示しています。