Why a rhyme can sound like a good reason

“Tea at eight, the day goes great.”

That has the reassuring ring of advice someone’s grandmother might have given. Now try the same claim without the rhyme: “Drinking tea at eight makes your day go well.”

Suddenly there are questions. Eight in which time zone? Will the tea answer your emails? Does the kettle know about your deadline?

We made this example for fun. Nobody tested it in a study. But it introduces something researchers call the rhyme-as-reason effect: a statement can feel more convincing when it rhymes, even though the rhyme adds no evidence.

A saying gets a sound check

In a 2000 study, Matthew McGlone and Jessica Tofighbakhsh asked participants to judge how accurately unfamiliar aphorisms described human behaviour. They compared rhyming sayings with altered versions that kept the meaning but removed the rhyme.

The rhyming versions received higher accuracy ratings. The researchers measured people’s impressions, not whether the sayings were objectively true. A confident nod is something you can record in a questionnaire. It is rather less useful as supporting evidence.

The authors suggested processing fluency as an explanation: when a phrase feels easy to process, that ease can be mistaken for a reason to believe it. This is an interpretation of the findings, not the discovery of a dedicated rhyme-trusting department in the brain. We would, admittedly, be pleased to have a department of our own.

“Focus on the meaning” is not a magic switch

In that study, warning people to separate poetic form from content weakened the rhyme advantage. It is tempting to conclude that learning about the effect makes you immune.

A 2025 Croatian study complicates that comforting story. Mirjana Tonković and Tonka Marković studied 153 participants aged 18 to 25, using proverbs and modified versions without rhyme. Half the participants received instructions to focus only on the content.

Rhyme increased accuracy ratings, but the instructions did not produce the expected reduction. Being told to pay attention was not a guaranteed defence.

These studies used different materials and languages. One Croatian sample of young adults does not represent everyone. Our playful example has not been tested either. The evidence concerns particular conditions, not a universal remote control for readers.

An advertising slogan can get a crown too

In a 2013 advertising study, Petra Filkuková and Sven Hroar Klempe compared invented rhyming and non-rhyming slogans. The task mattered. In the first experiment, rhyming commercial slogans received more favourable ratings, including for persuasiveness and trustworthiness. Social advertising showed a different pattern; in a direct comparison, rhyming versions of both kinds were preferred.

One distinction is worth keeping: rating a slogan as easy to remember is not a memory test. Finding it persuasive is not the same as buying something. A questionnaire is not a receipt.

Try taking the rhyme off

Paraphrase a suspiciously convincing saying in plain words. What does it claim? What evidence would support that claim?

Our tea advice looks less impressive after the rewrite. The rhyme cannot answer the questions. This is a useful way to inspect a statement, not a scientifically guaranteed vaccine against the effect.

For a game, reverse the exercise: give an obviously silly piece of advice a solemn rhyme. Our rhyme types and schemes and collaborative poetry prompts can help you get started. It is play, not a home replication of the research.

Slightly awkward, considering we make Rhyma

Telling you to avoid rhymes would be an odd ending for people who invite you to write poems together.

In Rhyma, you add a line with limited context: you see the last line, and the full poem appears after completion. Someone might follow your solemn thought with a cucumber. They may simply have needed a rhyme. The cucumber is under no obligation to understand your artistic vision.

So if our shared poem sounds wise, that does not mean any of us knows what it means. We can enjoy the accidental wisdom and leave it in the poem. For serious conclusions, we will look for something sturdier than matching endings.

Sources

• McGlone & Tofighbakhsh (2000). Birds of a Feather Flock Conjointly (?): Rhyme as Reason in Aphorisms.
• Tonković & Marković (2025). No tools no work. Rhyme as reason effect in proverbs.
• Filkuková & Klempe (2013). Rhyme as reason in commercial and social advertising.