In the 1960s, a psychological study was undertaken on twins to determine the affects of nature versus nurture. Not much is known about the study except that the twins were separated as babies and that separation was permanent.
One set of twins from the experiment were reunited in 2007. Elyse Schein and Paula Bernstein had not seen each other since they were babies. They were adopted by different couples and raised in different communities.
30 years later, Elyse decided to find her birth mother. Instead, she found a twin sister. The twins have written a book about the experience. They are also working to find out how their separation came about.