Video: Looking back at groundbreaking twins research—and its impact on genetics

identical twins alike but not alike peter zelewski
Image credit: Peter Zelewski

“I have looked at the data, and I’m collecting the data, and I’m still absolutely astounded. I still haven’t settled down and absorbed this kind of a finding yet. How long is it going to take me?”

These words were uttered by Dr. Thomas J. Bouchard, research director of the Minnesota Study of Twins Reared Apart (MISTRA), during a conversation with the Danish professor of psychiatry, Niels Juel-Nielsen, in May 1981. Bouchard was trying to come to terms with the revolutionary implications of his own research into identical and fraternal twins reared apart.

…

An archived recording of their remarkable exchange was rediscovered in 2011 by the twin researcher Dr. Nancy L. Segal. In her 2012 book Born Together—Reared Apart, Segal writes that Bouchard’s incredulity reveals the degree to which his new findings contradicted his own assumptions and the prevailing wisdom about the importance of environment in shaping a person’s traits, prospects, and outcomes. The scholars’ amazement is palpable as they discuss the exciting and groundbreaking conclusions suggested by Bouchard’s new data.

…

Twin studies have uncovered the enormous importance of genetics. They have laid to rest the notion that parents are omnipotent sculptors, and a child is a piece of clay. They have hammered another nail into the coffin of the Freudian guilt complex, where everything that goes wrong in an individual’s life may be attributable to poor parenting.

Read full, original post: A Striking Similarity: The Revolutionary Findings of Twin Studies

Related Articles

Infographic: Global regulatory and health research agencies on whether glyphosate causes cancer

Infographic: Global regulatory and health research agencies on whether glyphosate causes cancer

Does glyphosate—the world's most heavily-used herbicide—pose serious harm to humans? Is it carcinogenic? Those issues are of both legal and ...

Most Popular

ChatGPT-Image-Mar-10-2026-01_39_01-PM
Viewpoint—“Miracle molecule” debunked: Why acemannan supplements don’t work
AI Doctor with a Digital Neural Head
Utah becomes first state to empower AI to bypass doctors and prescribe certain drugs
Screenshot-2026-10-07-at-2.00.02-PM
9 wellness myths busted
Screenshot 2026-07-29 at 10.40
The COVID vaccine turbo cancer scare is back. Science still proves it’s wrong.
Screenshot-2026-09-22-at-12.26.15-PM
‘Forever chemical’ concerns: Separating hysteria from reasonable concern in the debate over PFAS danger
Screenshot-2026-09-28-at-11.26.17-AM
Viewpoint: Wellness movement activists reposition nicotine from a killer addictive drug into a cure-all for brain ills
Screenshot-2026-10-06-at-11.13.59-AM
RFK Jr.’s plan to curb America’s appetite for ultra-processed foods and artificial dyes blocked by the White House
glp menu logo outlined

Get news on human & agricultural genetics and biotechnology delivered to your inbox.