Twin-Triplet Separation Experiment
- Year(s) Conducted: 1960s to 1970s
- Nation Involved: The United States of America
A group of psychologists ran a secret experiment on twins & triplet children between the 1960s & 1970s. They began separating them at birth from their siblings and having them adopted as single children without their brothers or sisters. The adoptive parents were never told their son or daughter had twin or triplet siblings. The United States National Institute of Mental Health partly funded the experiment, which was only found out due to separated brothers finding each other in 1980.