Reviews and evaluates psychological studies of separately raised identical twins and suggests which aspects of human experience are largely shaped by one's here

Do identical twins get the same teeth at the same time? Do they feel each other's pain? Should they be placed in the same classroom or separated? Should they dr

Journalist Abigail Pogrebin is many things—wife, mother, New Yorker—but the one that has defined her most profoundly is “identical twin.” As children, s

Identical Twins explores the unique status of twinship and how it can affect personal and familial relationships with siblings, romantic partners, and friends.

Elyse Shein had always known she was adopted, but it wasn't until her mid-thirties that she searched for her biological mother. When Elyse contacted her adoptio