Copywriting Formulas: AIDA, PAS and FAB

Copywriting formulas are persuasion's inherited engineering: sequences refined over a century of measured response — AIDA, PAS, FAB and their families — that structure the journey from stranger to action. They're also routinely misused as fill-in-the-blank templates producing formula-scented copy everyone's learned to skim past. The working relationship: formulas as diagnostic skeletons — you learn them to see what a draft is missing, not to write by number. Here are the three that matter, what each is actually for, and the deployment craft.

The big three, actually explained

1. AIDA (Attention → Interest → Desire → Action) — the full-journey skeleton for cold audiences: earn the stop (the headline craft's whole job), convert attention into relevance ("this concerns you because"), relevance into want (outcomes, proof, the picture of after), want into the door (one CTA). Its diagnostic use: cold-traffic copy that isn't converting is usually missing exactly one stage — most commonly Desire, where features got listed but wanting never got built.
2. PAS (Problem → Agitate → Solve) — the pain-led sequence for problem-aware audiences: name their problem in their words (the confirm move), make its cost vivid — consequences, the compounding, the failed alternatives (agitation done honestly is empathy with stakes; done cynically it's the manipulation readers smell — the line is whether the pain is real and yours to solve), then the solution as relief. The workhorse for landing pages and email; the formula behind half the intros in this library, structurally.
3. FAB (Features → Advantages → Benefits) — not a sequence but a translation discipline: every feature (what it is) pushed through what-it-does to what-that-means-for-them ("60-character titles" → "titles that don't truncate" → "every impression sells the click"). The product-copy engine, and the fix for the spec-sheet writing that expertise defaults to.

The deployment craft

Match formula to awareness: the real selector — cold audiences need AIDA's full journey, problem-aware need PAS's recognition, solution-comparing need FAB's translation plus proof; running PAS on someone already convinced (re-agitating a solved decision) is the mismatch that reads as manipulation. Formulas structure; voice writes: the skeleton invisible under your tone — copy where the formula shows ("Are you struggling with X? It gets worse...") has failed at the seams. And know where they don't belong: informational content runs on the answer-first doctrine, not persuasion arcs — the blog post structured as AIDA withholds the answer to build desire, which is precisely the suspense-withhold failure; formulas own the conversion surfaces and the CTA layer, prose owns the teaching.

Frequently asked questions

Which formula should a beginner learn first?

PAS — the widest coverage per unit learning (most commercial writing is problem-shaped), the clearest diagnostic ("did I name it, price it, solve it?"), and the natural bridge to the others: AIDA is PAS with an attention economy; FAB is PAS's Solve done properly.

Are there SEO-specific copywriting formulas?

The search-native ones this library already carries: the title formulas (AIDA's Attention stage industrialised), the confirm-deliver-promise intro pattern, and the answer-then-depth section shape extraction rewards — persuasion formulas adapted to readers who arrived pre-interested, which changes the sequence's whole front half.

Do the classic formulas still work on formula-literate audiences?

The structures work permanently — they map how deciding actually proceeds — while the surface patterns burn out (the "Are you tired of..." open is dead precisely because the skeleton showed). Which restates the craft rule: formulas diagnose and structure, voice and specificity deliver — the same division as every tool in this silo, with the results compounding on the standing pair: copy that converts and authority that ranks it (problem, agitated, solved).