Twin-Speak Phenomenon The Youldens' experience is part of a phenomenon known as cryptophasia, where 30-50% of twins create unique ... Now operating their own language-learning company, they ...

Up to 50% of twins develop their own communication pattern with one another. Most lose it over time, but for the Youlden twins it has become a normal way of communicating. Twins Matthew and ...

Picking up a second or third language has its challenges, but two twin brothers have put the nation's Duolingo streaks to ...