Take Dennis and Douglas.
In high school, they were so alike that friends told them apart by the cars they drove, they told researchers in a study of twins in Virginia.
Most of their childhood experiences were shared — except that Dennis endured an attempted molestation when he was 13.
At 18, Douglas married his high school girlfriend.
Why do twins, who share so many genetic and environmental inputs, diverge as adults in their experience of mental illness?
Persons:
Dennis, Douglas
Organizations:
University of Iceland, Karolinska Institutet
Locations:
Virginia, Sweden