Understanding Twins: Types, Facts, and the Unique Bonds They Share

Twins Matthew and Michael Youlden have developed a unique language called Umeri, which is spoken exclusively by them. The Youlden twins, originally from Manchester, UK, are known for their language skills, each fluent in 25 languages. However, Umeri holds a special place in their hearts. They first started creating the language as children and it has grown into a complex form of communication that continues to connect them even as they now live in different countries.

A personal language, born from a close bond

The Youldens’ journey with Umeri began early in their lives, inspired by their close relationship and their exposure to different languages. Dr. Nancy Segal, director of the Twin studies Center at California State University notes that up to 40% of twin toddlers develop unique communication patterns, known as “twin speaking.” This phenomenon, described as ‘cryptophasia’ or ‘private speech’, usually disappears as twins grow older and come into contact with more people. But for Matthew and Michael, their shared language only grew stronger, reflecting a bond that has remained remarkably close.

A language that evolves with time

Unlike most ‘twin languages’, Umeri expanded and adapted as the Youlden twins grew older. Their language now includes modern words for things like “iPad” and “lightning cable.” Their childhood fascination with languages ​​led them to study multiple languages, integrating elements from each language into Umeri. Although Umeri was originally written in a home-made alphabet, it is now expressed in the Latin alphabet for convenience.

Umeri’s lasting impact on their lives

Child development specialist Karen Thorpe explains that private languages ​​in twins often arise from deep personal bonds, something that is not unique to twins alone. Despite living apart – Michael in Gran Canaria and Matthew in the Basque Country – the twins remain close through Umeri. However, they have no intention of passing it on, seeing it as an intimate bond unique to their shared experience.