Most Google Ads headlines are written by gut feel. Someone on the team writes what sounds good, tests a few versions, and picks the winner. That works — until it doesn’t.
The problem isn’t the testing. It’s that there’s no shared framework behind the writing. When you don’t have a clear reason why a headline should say what it says, every review becomes a matter of opinion. And opinions don’t scale.
This guide gives your team a practical framework based on Aristotle’s Rhetorical Triangle — ethos, pathos, and logos — and shows how to apply it to Google Ads headline copy. I’ll walk through a worked example in the smart lock market to make it concrete.
This isn’t a real case study. It’s a fictional example designed to show the framework in action so your team can apply it to whatever you’re selling.
A Quick Refresher on the Rhetorical Triangle
Aristotle identified three modes of persuasion that have held up for over two thousand years. They work because they map to the three things a person needs before they act: trust, motivation, and justification.
Ethos is credibility. It answers the question: Why should I trust you? In ad copy, this shows up as proof — awards, certifications, customer counts, years in business.
Pathos is emotion. It answers: Why should I care? This is where you connect with what the searcher is actually feeling — fear, frustration, aspiration, urgency.
Logos is logic. It answers: Why does this make sense? This is your evidence — pricing, specs, comparisons, ROI, guarantees.
Every strong headline leans on at least one of these. The question is: which one should lead, and when?
When to Use Each Mode
The mode you lead with depends on two things: where the searcher is in their decision, and what they typed into Google. Here’s how it breaks down:
This isn’t rigid. There’s overlap. But it gives your team a starting point that’s better than “write something catchy.”
A Worked Example: Smart Locks
Let’s say you’re marketing a smart lock — a keyless entry system for homeowners. Here’s how the framework applies at each stage.
Problem-Aware
“how to stop worrying about forgetting keys”
The searcher isn’t shopping for smart locks yet. They’re frustrated by a recurring problem. Pathos leads.
Example headlines
Landing page alignment
Start with the problem, not the product. Validate the frustration first, then introduce smart locks as a category — not just your brand.
Solution-Aware
“best keyless entry systems”
Now they’re comparing types of solutions. They need a reason to trust you over the alternatives. Ethos leads.
Example headlines
Landing page alignment
Reinforce the trust signals from the ad. Feature reviews, press mentions, certifications, or comparison tables that show why your product stands out in the category.
Product-Aware
“SmartBolt Pro vs KeyMaster 3000”
They’re comparing specific products. They want facts. Logos leads.
Example headlines
Landing page alignment
The page should be spec-heavy. Comparison charts, feature breakdowns, pricing transparency, and clear calls to action. The person is close to buying — don’t make them dig for details.
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Logos
Most-Aware
“SmartBolt Pro discount”
They already know your product. They just need a nudge. Pathos and logos work together here.
Example headlines
Landing page alignment
Short and conversion-focused. Minimal friction. The offer from the ad should be front and centre on the page — no bait-and-switch.
How This Changes by Industry
The balance between ethos, pathos, and logos shifts depending on what you sell. Here are a few patterns to consider:
Pathos
Logos
Finance, health, legal
Trust is the barrier. Lead with credentials across every stage.
Lifestyle, travel
Identity-driven decisions. Emotion stays important throughout.
SaaS, consumer tech
Similar products, price-sensitive. Features and value dominate early.
B2B, long sales cycle
Risk reduction matters. Pathos is about “don’t pick the wrong vendor.”
The framework stays the same. The weighting changes.
Making This Work for Your Team
The point of this framework isn’t to turn every headline into a formula. It’s to give your team a shared language for why a headline should say what it says.
Here’s how to put it into practice:
Before writing, identify the intent stage. Look at the keyword. Ask: does this person know what they want, or are they still figuring it out? That tells you which mode should lead.
Match the headline to the landing page. This is where most teams slip. The ad promises one thing, the page delivers another. If your headline leads with emotion, the page should start with emotion — not jump straight to a spec sheet. If the headline leads with proof, the page should back it up immediately.
Review copy against the framework. When someone on the team writes a headline, the question isn’t “does this sound good?” It’s: “what mode are we leading with, and does it match the intent?” That turns subjective feedback into a productive conversation.
Test within modes, not just across them. Instead of testing a pathos headline against a logos headline (which tells you little), test two pathos approaches against each other. That way you learn what resonates within the right strategy, not just which strategy accidentally won.
The Takeaway
Writing Google Ads headlines doesn’t have to be guesswork. The Rhetorical Triangle gives your team a clear framework: match the mode of persuasion to the searcher’s intent, and make sure the landing page follows through.
Start with the intent. Pick the mode. Write the headline. Align the page.
That’s a process your team can follow — and improve on — without relying on anyone’s gut feeling.