Latest / Marketing Psychology with Fexingo: Behavioral Triggers, Persuasion, and Consumer Behavior / How the Rhyme-as-Reason Effect Makes Ads Stick
Transcript
- Lucas: Luna, have you ever heard someone say 'if it doesn't fit, you must acquit' and thought, 'well, that sounds right' — even if you had no idea whether the evidence actually supported it? Luna: Absolutely. That line from the O.J. Simpson trial is basically a masterclass in persuasion. And it's not just the alliteration — it's the rhyme. Lucas: Exactly. And if these marketing psychology conversations have sparked something you've actually used — whether it's a tagline you tweaked or a campaign you rethought — listeners like you are what keeps this show ad-free and independent. You can support us at buy me a coffee dot com slash fexingo. No pressure, just a sincere thanks to anyone who finds value here. Luna: Yeah, it's a small gesture that makes a big difference. So back to the rhyme effect — there's actually a formal name for it: the rhyme as reason effect. Lucas: Right. It was first documented in a 2000 study by researchers at the University of Toronto. They presented participants with aphorisms like 'woes unite foes' versus 'woes unite enemies' — same meaning, but one rhymes. Participants consistently rated the rhyming version as more accurate. Luna: So the brain mistakes fluency for truth. If it's easy to process, we assume it's correct. Lucas: Precisely. And marketers have known this intuitively for decades. Think of insurance taglines: 'safe and sound' versus 'secure and stable.' A 2019 study by a brand recall firm found that 'safe and sound' had 22% higher unaided recall than the non-rhyming alternative. Luna: And it's not just recall. Does it actually drive purchase intent? Lucas: It can. A 2025 experiment in the Journal of Consumer Psychology tested skincare product names. One set had rhyming names like 'Glow & Flow' and 'Pure & Sure'; the control set had non-rhyming equivalents like 'Glow & Radiant' and 'Pure & Clear.' Purchase intent was 14% higher for the rhyming names, even though the product formulations were identical. Luna: So the rhyme acts as a subtle credibility signal. But I imagine there's a point where it backfires. Lucas: Big time. In 2023, a cereal brand launched a campaign with the tagline 'crunch that won't budge, a promise you can't fudge.' It was so forced that consumers actually became skeptical. Social media sentiment turned negative, and the campaign was pulled after three weeks. Luna: Because the rhyme made the claim feel manipulative rather than credible. There's a fine line between fluency and gimmick. Lucas: Exactly. The research suggests the effect works best when the rhyme is subtle and the message is already plausible. If you over-rhyme or use a strained rhyme, processing fluency drops and skepticism spikes. Luna: What about jingles? Those are essentially extended rhymes set to music. Lucas: Jingles are a perfect example. Think of the classic 'I'm a Pepper, you're a Pepper' from Dr Pepper. That rhyme, combined with melody, creates a fluency loop that embeds the brand name in memory. But jingles have declined in the last decade because they can feel dated. Luna: Though some brands are bringing them back ironically. I've noticed a few DTC companies using short rhyming hooks in TikTok ads. Lucas: Right, and that's smart because the medium rewards catchiness. But there's a cultural dimension too: rhymes don't always translate. A tagline that rhymes in English may fall flat or even mean something else in another language. Luna: So global brands need to be careful. You can't just translate a rhyming tagline and expect the effect to hold. Lucas: Exactly. McDonald's learned that with 'I'm lovin' it' — which doesn't rhyme in most languages, but they kept the English phrase globally because the brand recognition outweighed the need for a native rhyme. Luna: So the rhyme as reason effect is real, but it's context-dependent. When it works, it boosts fluency and credibility. When it's forced, it triggers skepticism. Lucas: And the key takeaway for marketers: use rhyme sparingly, test it with your audience, and never let the rhyme dictate the message. The message has to be true first; the rhyme just makes it stickier. Luna: So next time you hear a jingle or a tagline that rhymes, ask yourself: does this feel true because it's well-crafted, or because the evidence is solid? Lucas: That's the question. And if you catch yourself nodding along to a rhyme, you're experiencing the bias in action.