In 1939 Wendell Johnson chose one of his graduate students named Mary Tudor to conduct an experiment on 22 orphan children which was called “The Monster Study”. The study started from January to May. The Individuals weren't told about the intent of the experiment. She was trying to pursue stutter in healthy kids to see if their speech would produce a change. Among all the orphans there was 10 who were pronounced as stutters before the experiment. After all the orphans were placed in groups. She gave positive speech therapy to half and the rest negative speech. Tudor and five other graduates listened to them speak and gave the a scale from 1-5. The stuttering children were placed in two different groups, group IA which was the group that was
