When an Italian grandmother explains how to fold pasta dough and a Dutch teacher demonstrates a logic puzzle, their hands tell the same story—even though their cultures speak in wildly different gestures. A new study from researchers at the University of Catania and the Max Planck Institute for Psycholinguistics reveals that adults across cultures instinctively shift into a shared "teaching mode," using remarkably similar hand movements when explaining new concepts to children, regardless of how much they gesture in everyday conversation.
The discovery matters because it suggests something profound about human nature: we may all possess a universal instinct for teaching that transcends cultural boundaries. While previous research has documented that Italians gesture far more frequently than Dutch speakers in ordinary conversation, this study asked whether that cultural difference persists when adults switch into teaching mode. The answer is no—or at least, not in the way anyone expected.
Emanuela Campisi and her colleagues invited 16 Italian and 16 Dutch adults to demonstrate two novel logic puzzles to two different audiences: children aged 9–10 and other adults. The participants weren't following a script. They were simply explaining something unfamiliar in the most natural way possible, allowing researchers to capture genuine teaching interactions as they happen in everyday life. As expected, Italian participants produced significantly more representational gestures overall—gestures that visually show what they're describing, like miming the action of cracking an egg while explaining how to do it. Dutch adults used fewer such gestures overall, consistent with their culture's communication style.
But here's where the shared instinct emerges. When both groups turned their attention to teaching children rather than other adults, they didn't simply gesture more. Instead, both groups fundamentally changed the type of gestures they used. Across both cultures, adults increased their reliance on visually rich, two-handed gestures when demonstrating the puzzles to children. These elaborate hand movements appear to boost what researchers call "iconicity"—the visual clarity of the explanation—making abstract or unfamiliar ideas easier for young minds to grasp.
The researchers also identified something called "bracketed gestures," where one hand stays still while the other moves, as if anchoring information in space. Dutch adults used these frequently when teaching other adults but scaled them back when speaking to children. Italians used them less often overall, but remarkably, their rate of bracketed gestures also converged toward the Dutch rate when teaching children. The convergence is striking: two culturally distinct communication styles naturally gravitating toward the same pedagogical approach.
Emanuela Campisi encapsulates the finding's simplicity and depth: "Humans are natural teachers, and our bodies are part of the lesson." The research, published in Royal Society Open Science, supports what psychologists call "folk pedagogy"—the theory that humans possess intuitive, deeply rooted teaching strategies shaped by assumptions about what learners need. These aren't conscious decisions or cultural rules. They're spontaneous, instinctive adaptations that surface when adults recognize they're speaking to children.
The study deliberately looked at semi-naturalistic interactions rather than formal classroom instruction, capturing how teaching actually unfolds outside the structured environments where much learning research takes place. It's a reminder that beneath our cultural differences in how we speak with our hands lies a shared human capacity to recognize what a learner needs—and to adjust instinctively to meet them.