telepathic abilities displayed by twins
 Twins are often telepathic from when they are very young infants
they are in the same frequency at the same time and learn to communicate with words.
as infants twins telepathy often is about a single thought - the feeling of hunger, later twins use it as a form of instinctive communication
twin telepathy or telepathy between close family members can remain functioning for a life time.
to learn telepathy between family members can result in faster success