Do twins have a special relationship?

Identical twins share a particularly intense bond. They are the result of one fertilized egg splitting into two, giving them identical DNA. As a result, identical twins are as close as two people can be. They can speak in unison (its weird at first, then charming).

Why are twins late talkers?

Genetics. Higher likelihood of inherited causes of speech delays. “Twin talk.” These are invented words, gestures, simple syntax that twins and multiples use to talk to each other. Sometimes, they are SO effective at communicating with each other without words that their language and speech development may be delayed.