The DNA of stories: How a single motif can travel the globe

Nature · Published 19 October 2026 Swipe more like this →

In short: Every folktale, from ancient myths to modern fables, is built from a shared library of narrative building blocks. These elements, known as motifs, are the smallest units of folklore with the power to persist across centuries and continents. Discover how scholars map the hidden architecture of human imagination.

The Motif-Index of Folk-Literature, compiled by American folklorist Stith Thompson between 1932 and 1936, serves as the definitive catalogue for these narrative building blocks. Thompson defined a motif as the smallest element in a tale possessing the power to persist in tradition, specifically requiring something 'unusual and striking' to survive. However, he also offered a broader, more 'cautious' definition, including anything that constitutes a traditional narrative structure.

Thompson's work was not created in a vacuum. Drawing from the 1910 publication of European tale-types by Finnish folklorist Antti Aarne, he expanded that existing research. Thompson expanded this scope to cover regions from Europe to Asia by 1928, creating the Aarne-Thompson tale type index. His Motif-Index then systematically classified and numbered the motifs found within those specific tale types. This system allows scholars to identify a single motif—such as a 'dead helper'—that may appear in folktales from all parts of the earth.

The relationship between motifs and plots is a central point of study. Scholars like Alexander Veselovsky suggested that a 'cluster of motifs' constitutes a plot, an idea that influenced Russian formalists like Vladimir Propp. Thompson warned that while a cluster of motifs can form a recognizable framework, it can also contain multiple distinct tales within it. Today, the Motif-Index remains a standard professional tool, often used alongside the Aarne-Thompson-Uther (ATU) Index for comparative analysis of global folklore.

While Thompson's work covers a vast range of traditions, it is not exhaustive. Numerous other indices have been produced to cover specific cultures, including the Arab world, Icelandic literature, Polynesian narratives, and medieval Spanish folk narratives. Together, these works provide a comprehensive map of the recurring themes that define human storytelling.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• How scholars mapped the DNA of the world's most famous stories
• Folklore is far more than just old stories and dusty legends
• Why repeating a single detail can unlock the deepest meaning of a story
• The ancient roots of fairy tales may predate modern languages
• Why do the same stories and characters appear in every culture across human history?
• Mice do not especially crave cheese, but they do make faces
• Mosses soak up billions of tons of carbon a year without roots or seeds
• Your body's most misunderstood defense system is actually a sophisticated, sticky, protective gel.
• Thirty-six hundred little flies that rewrite public health
• The Hittites paid three times more for a mule than for a fine horse
• White, red and black mulberries are named for their buds, not their fruit
• Why the mule deer's unique escape strategy is both its greatest strength and weakness

More in Organisms · More in Nature · Latest · A–Z · All topics