Johnson chose 22 orphans as participants for The Monster Study. Some of the orphans had a stutter. (It’s not uncommon for young children to have a stutter and then naturally “get over” the stutter without treatment.) Some of the orphans didn’t have a stutter.
The orphans were split up into two groups, with stutterers and non-stutterers in both groups. One of these groups were labeled “normal speakers.” The others were labeled “stutterers.” Throughout the course of the experiment, the children were treated as such.
Johnson’s team met with the children every few weeks for five months to “evaluate” their speech. Children in the “normal” group were praised for their ability to speak well, even if they were actually stuttering or had problems speaking. Children in the “stuttering” group were told that they spoke poorly. They were told things like, “You must try to stop yourself immediately. Don’t ever speak unless you can do it right.”
So what happened?:
The children who were labeled “normal” weren’t affected much by the researchers’ praise. They saw improvement in only one child.
Children in the “stuttering” group fared a lot worse. Remember, not all of these children actually had a stutter – they were just told that they had a stutter. Of the six children that were falsely chastised for their speech, five developed speech problems. Reports show that these children became withdrawn and some stopped speaking altogether. These children were as young as five years old.
The study was created with good intentions. Johnson and his colleagues at the University of Iowa frequently conducted studies on themselves and willing adult subjects in the name of finding a cure for stuttering. But other colleagues worried that the use of orphans was crossing lines. Johnson wasn’t the only person conducting studies on marginalized groups in the name of science – Nazis were doing the same thing over in Germany. So the results of the study were never published.